The Friendship Paradox vs. the Happiness Paradox

EvoLiteracy News 02 22 2016

Cartoon BizarroComics - EvoLiteracy 2016If you are on Twitter (or Facebook), you have probably asked yourself two questions: Am I less popular than my social-media friends? Am I less happy than them? These phenomena (i.e. cyber popularity or cyber happiness) are both real and perceptual.

A paper, by Bollen et al. (total four coauthors), which is available as manuscript (The Happiness Paradox: Your Friends Are Happier Than You), caught my attention. The authors provide evidence of complex associations between the “friendship paradox” and the “happiness paradox.” Enjoy. – Guillermo Paz-y-Miño-C

What is the Friendship Paradox? The perception that YOU are less popular than your friends (on average).

What is the Happiness Paradox? The perception that YOU are less happy than your friends (on average).

What is the issue (so what)? The friendship paradox has been documented in the scientific literature (see Suggested Readings below), but the happiness paradox has remained untested, without quantitative demonstration that it actually happens. Or that, if it does, it occurs in association –somehow– with the friendship paradox. The paper by Bollen et al. makes such connection.

To make it easier for our readers, I will summarize the Bollen et al. study in a digestible manner, although the authors themselves do a fine job explaining the theory, the data and the implications of the research to a specialized audience (see PDF of manuscript). But, for the non-scientists, my summary below might help.

The observations in nature (the social environment):

Online social networking is associated with elevated levels of loneliness, anxiety, displeasure, and dissatisfaction. For example, many times you are on Twitter (or Facebook, or alike social media), you experience an overall sensation that your average contacts (i.e. friends, people you follow, or your followers) have more friends or followers than you do, or are happier than you are.

When measured in number of friends-connections, most people tend to have fewer friends than their own friends do on average. Why? Watch the short video posted below (1 minute 36 seconds of your time) for a friendly introduction to the Friendship Paradox.

Now, let us examine numerically how the Friendship Paradox emerges from a simple example. Imagine a social network of four people, as depicted in the image below: Ana has 1 friend (Bill). Bill has 3 friends (Ana, Carla and Dan). Carla and Dan have 2 friends each (Bill, and each other).

Cartoon The Friendship Paradox - EvoLiteracy 2016

There are 8 friends in the network (1 + 3 + 2 + 2). Thus, on average, each person has 2 friends (8/4 = 2).

However, how many friends does each person’s friends have (i.e. how many friends of friends)? Ana is connected to +3 friends of friends, via Bill (who has 3 friends), a subtotal of 3 friends of friends. Bill is connect to 1 + 2 + 2 friends of friends (Ana has 1, Carla has 2, and Dan has 2), a sub total of 5 friends of friends. Carla is connected to 3 + 2 friends of friends (Bill has 3 and Dan has 2), a sub total of 5 friends of friends. And Dan is connected to 3 + 2 friends of friends (Bill has 3 and Carla has 2), a sub total of 5 friends of friends. Therefore, the grand total of friends of friends in the network is 18.

What is the average number of friends of friends? We obtain this number by dividing the total number of friends of friends in the network (=18) by the total number of friends in the network (=8), which gives us a value of 2.25. The Friendship Paradox becomes evident for Ana, Carla and Dan since their average number of friends in the network (=2.0) is lower than the average number of friends of friends in the network (=2.25). The phenomenon is particularly acute for Ana since she has a single friend (Bill) and, therefore, her friendship relations are clearly below both the average number of friends in the network (2.0) and the average number of friends of friends in the network (2.25).

This overall sampling bias effect (= the Friendship Paradox) results –in part– from Bill’s presence in the network. Bill has the most friends and is more often counted in the friends of friends tabulation, thus rising the average value (to 2.25).

The hypothesis

At least in part, Bollen et al. tested the hypothesis that the friendship and happiness paradoxes are predictable byproducts (effects) of universal social network connectivity patterns. And that associations between friendship and happiness also derived from such connectivity (note that the Friendship Paradox has been demonstrated numerous times, but Bollen et al. demonstrated it again with their sample to be able to link it to the Happiness Paradox, the central aspect of their paper).

The phenomena “friendship paradox” or “happiness paradox” result from the inherent structural bias in social networks that favor popular individuals (like Bill, above), who are, by definition, more likely to belong to someone’s social circle. For example, when individuals like you and I equate popularity of our cyber-friends with their cyber-prestige, and compare our own popularity to theirs, we tend to increase our levels of dissatisfaction with ourselves (i.e. we tend to enhance, in our minds, the effects of the friendship-paradox- or the happiness-paradox).

The predictions

Bollen et al. predicted that the effects of the friendship paradox will extend beyond popularity. If popular individuals tend to be happier, then their elevated happiness will become more prevalent as well. Thus, friendship-levels and happiness-levels (as per both paradoxes) should correlate, and this relationship should be measurable.

The authors also predicted that unhappiness will contribute more directly to the negative psycho-social effects of social networking, since it will affect how individuals assess their own subjective wellbeing (i.e. general happiness/unhappiness or life satisfaction/dissatisfaction relative to that of others).

The friendship paradox or the happiness paradox will generate predictable distributions of data, as shown in Fig. 1, below:

Figure 1 Friendship vs Happiness Paradoxes - EvoLiteracy 2016

Figure 1. Predictable distributions of data expected if the Friendship or Happiness paradoxes are supported by the data (redrawn and adapted from Bollen et al.).

The study

Bollen et al. examined 40,000 Twitter users connected by reciprocal friendship (i.e. people that follow each other).

Two distinctive groups were characterized, the Unhappy group and the Happy group, by applying a subjective assessment of their wellbeing (derived from the Twitter-users’ interactions with their cyber-neighbors), which ranged in a scale from -1.0 (unhappy) to +1.0 (happy).

As shown in Fig. 2, below, both the Unhappy and Happy groups experienced evident friendship-paradox effects (i.e. members of both groups did have, or thought that their friends had, more friends, on average, than themselves). Interestingly, the intensity of the friendship paradox was weaker in the Unhappy group (left) than in the Happy group (right).

Figure 2 Friendship vs Happiness Paradoxes - EvoLiteracy 2016

Figure 2. Friendship-paradox effects on the Unhappy (left) and Happy (right) groups. Note how the intensity of the friendship paradox was weaker in the Unhappy group than in the Happy group. The “clouds” of data correspond to point distributions of each of the 40,000 Twitter users in the study (modified from Bollen et al.).

In addition, as Fig. 3, below, suggests, both the Happy (top) and Unhappy (bottom) groups experienced clear happy-paradox effects. However, the intensity of the happiness paradox was stronger in the Unhappy group (see the very steep slope in the data point distribution, plus the amount of data points over the main line) than in the Happy group (see the not-so-steep slope in the data point distribution, plus the amount of data points over the main line). In essence, the majority of the sampled Twitter users were less happy (or more unhappy) than their friends on average. These findings support the idea that the Happiness Paradox is real.

Figure 3 Friendship vs Happiness Paradoxes - EvoLiteracy 2016

Figure 3. Scatter point distributions of an individual’s (exemplified by YOU) sense of happiness as function of his/her (exemplified by YOUR) friends’ average sense of happiness (modified from Bollen et al.).

Individual Happiness and average friends’ Happiness were more strongly related within the Unhappy group than within the Happy group (Fig. 3). Bollen et al. refer to the clustering of unhappy users with themselves, and happy users also with themselves, as being homophilic or assortative in their social networking (both are common terms in behavioral sciences).

Figure 4, below, corroborates the finding that Unhappy Twitter users had fewer friends, on average, than the Happy Twitter users had, on average.

Figure 4 Friendship vs Happiness Paradoxes - EvoLiteracy 2016

Figure 4. Unhappy Twitter users had fewer friends, on average, than the Happy Twitter users had, on average (modified from Bollen et al.).

Figure 5, below, corroborates the finding that the Happiness Paradox affected more the Unhappy Twitter users, on average, than the Happy Twitter users, on average.

Figure 5 Friendship vs Happiness Paradoxes - EvoLiteracy 2016

Figure 5. The Happiness Paradox affected more the Unhappy Twitter users, on average, than the Happy Twitter users, on average (modified from Bollen et al.).

Paradoxically, however, as shown in Fig. 6, below, there was a weak correlation between individual happiness and individual popularity for the Unhappy group (Pearson’s R = -0.047; range -0.08 to -0.013). For the Happy group, the correlation was more pronounced (Pearson’s R = 0.126; range 0.081 to 0.171).

Figure 6 Friendship vs Happiness Paradoxes - EvoLiteracy 2016

Figure 6. There was a weak correlation between individual happiness and individual popularity for the Unhappy group. For the Happy group, the correlation was more pronounced (modified from Bollen et al.).

The overall results suggest that unhappy Twitter users were more strongly affected by the lower happiness of their friends, possibly explaining why this group exhibited a stronger Happiness Paradox (Figs. 3 and 5) in the absence of a strong correlation between Happiness and Popularity (Fig. 6).

Warnings

Bollen et al. warn us that:

Observations of decreased happiness among social media users may result directly from a widespread inflated perception of the happiness of one’s friends.

Given the large role that social media (e.g. Twitter, Facebook) plays in the social lives of billions of individuals, the authors suggest that these environments may induce long-term changes in the public’s social behavior and may, over time, alter the very nature of social relations themselves. — EvoLiteracy.

Suggested Readings:

Why are your friends more popular than you?

Why your friends have more friends than you do?

Friends you can count on.

Your friends are more interesting than you.

Generalized friendship paradox in complex networks: The case of scientific collaboration.

World Visitors to EvoLiteracy

EvoLiteracy News 02 17 2016

World Visitors to EVOLUTION LITERACY – Readers from 103 countries visited EvoLiteracy during 2015. Three in every four readers were from the United States. About one in every five visitors were from Brazil, Canada, UK, Germany, India, Ecuador, France, Australia and Spain. And one in every ten cyberworms came from 93 other countries. EvoLiteracy is growing thanks to our world friends and followers. – Guillermo Paz-y-Miño-C.

UPDATE – a supplementary post to this one is available at EvoLiteray January 1, 2017.

World Visitors to Evolution Literacy 2015

There are 190+ countries in the world (member states of the United Nations). EvoLiteracy reaches half of them (52%). The image below includes flags of nations, which total 230+. We still need to reach as many nations as possible. Please share EvoLiteracy with others.

Flags of the World

Flags of 230+ nations in the world. Click on image to enlarge. Source Danilka’s Blog.

Top 25 Most Read Posts of 2015

Here are the most popular postings of 2015. I was glad to discover that the biology science videos made much of an impact, particularly among science educators. I also liked that three crucial postings about higher education (marked with an asterisk * below) were well received. To my surprise (and I thank the readers for liking it), the posting about Ecuador’s Academy of Science was ranked top 10. My personal favorite was Science Challenges Golden Age of Violin Making, and this is because I am fascinated with string instruments (classic guitars, ukuleles, charangos); I learned much while investigating the violin ancestry. But I cannot close without admitting how much pleasure gave me to see our readers liking Evolution Wars Debunk II (ranked 13th, a lucky number). Plus the most commented story was Shroud of Turin, Poor Science, and the Persistence of a Myth, which was reposted in various blogs and generated two weeks of discussions. Thanks to all for supporting EvoLiteracy. – GPC

EvoLiteracy – Biology and Science Videos

Photography – Wildlife – Fossils – Landscapes – Museums – Monuments – Cities

GPC Scientific Publications

Evolution Controversy and the Incompatibility of Science and Religion

5 GPC BioArt

EvoLiteracy News 10 26 2015 Shroud of Turin, Poor Science, and the Persistence of a Myth

A Secular Humanist’s Plea for Dzhokhar Tsarnaev’s Life

2015 Nobel Prize in Chemistry Goes to Curiosity-Based Research

Antivaxxers and the Educated-Public-Herd Effect

10 Ecuador’s Academy of Sciences Earns International Recognition

11 Science Challenges Golden Age of Violin Making

12 The “Jackprot Simulation”

13 Evolution Wars: Debunk II

14 EvoLiteracy News 05 08 2015 Should scientific journals request authors to change their practices for presenting continuous data in small sample size studies?

15 The Incompatibility Hypothesis: Evolution vs Supernatural Causation

16 At The Down House: Darwin’s Home

17 The Art Of Nature: Sculptures Of Dinosaur Tracks and Traces

18 College Educated But Deeply In Debt For An Overpriced Degree *

19 New Book: Why does Evolution Matter? The Importance of Understanding Evolution

20 Imminent Collapse of Basic Science Under For-profit Model *

21 Dehumanizing Academia by Dismantling the Humanities *

22 EvoLiteracy News 03 19 2015 US Senator Ted Cruz Distorts NASA’s Mission Budget

23 Hiking among Trilobites, Ancient Whales and Dinosaurs

24 EvoLiteracy News 09 09 2015 Protisto-Biologists Flock to Seville for ECOP-ISOP Scientific Meeting

25 Reviews of Book Evolution Stands Faith Up – Reflections on Evolution’s War

Today: International Darwin Day 02 12 2016

EvoLiteracy News 02 12 2016

“Darwin Day… signifies the celebration of the achievements of reason, science, and the advancement of human knowledge. The igniting moments in human history when light was brought into our own origins, when understanding that ordinary apes, like Homo, were capable of the extraordinary, of discovering the truth and debunking obscurantism; yet we still struggle to make science the sole guiding star in our survival decisions, the reliable source of concern and joy, the toolkit to plan our departure from Earth –before our Sun in agonizing heat engulfs its nearest orbiting planets– and seek home somewhere else in the cosmos”Guillermo Paz-y-Miño-C

A few images and Evolution-Literacy links to celebrate International Darwin Day. — An update on our New England Science Public Series Evolution Volumes 1 and 2, including open access to the studies on acceptance of evolution in the United States. — Links to our Incompatibility Hypothesis papers (evolution versus supernatural causation). — A recount of a visit to the Down House (Darwin’s home). — And an article, from 2013, about the “history of Darwin Day” at the US Congress. Enjoy. – GPC

Here are some photos of Darwin’s statue at the British Museum of Natural History in London, taken back in 2010.

A - Darwin British Museum Nat Hist - Photo G-Paz-y-Mino-C 2010

Above: an overall view of Darwin’s statue (marble) at the British Museum of Natural History in London.

B - Darwin British Museum Nat Hist - Photo G-Paz-y-Mino-C 2010

Above: a close up of Darwin’s rostrum.

C - Darwin British Museum Nat Hist - Photo G-Paz-y-Mino-C 2010

Above: and another close up of this beautiful carving on marble.

E - Darwin British Museum Nat Hist - Photo G-Paz-y-Mino-C 2010

Above: the main hall at the British Museum of Natural History in London. Darwin’s statue is in the back, just at the end of the first level of the stairs.

F - British Museum Nat Hist - Photo G-Paz-y-Mino-C 2010

Above: the outdoors of the British Museum of Natural History in London.

Paz-y-Mino-C_Book_Cover_Evolution_Stands_Faith_Up_JPEGNOVA Publishers (New York) used one of these images for the cover of our book Evolution Stands Faith Up: Reflections on Evolution’s Wars (2013). “Paz-y-Miño-C doesn’t ask the reader to ‘believe’ in evolution. He provides overwhelming evidence, clearly written, that shows how scientific inquiry leads to important and practical results, while superstition and faith lead nowhere. Although we may not be able to reason someone out of what they were never reasoned into, the author presents a roadmap for those whose minds are open to discover the wonders and beauty of science.” – Herb Silverman, PhD, author of Candidate Without a Prayer: An Autobiography of a Jewish Atheist in the Bible Belt. Find Evolution Stands Faith Up at NOVA: Soft Cover, Barnes & Noble, Amazon.comAmazon UK.

Update on NESP Series Evolution

The open access New England Science Public Series Evolution continues to be highly downloaded. Here are some updates:

NESP Series Evolution Vol 1 No 1 20131,670+ downloads of Volume 1, Number 1: Paz-y-Miño-C G & Espinosa A. 2013. Attitudes toward Evolution at New England Colleges and Universities, United States. New England Science Public: Series Evolution 1(1): 1-32 (ISSN: 2326-0971). The authors compile the most significant results of their conceptual and quantitative studies on the patterns of acceptance of evolution at New England colleges and universities, conducted between 2009 and 2012. They examine the views of New England Faculty and Educators of Prospective Teachers (higher-education faculty themselves, specialized in training future teachers) from 35 colleges and universities, as well as a representative sample of College Students from a Public, Private and two Religious institutions who were polled in three areas: the controversy over evolution versus creationism versus Intelligent Design; their understanding of how science and the evolutionary process work; and their personal convictions concerning the evolution and/or creation of humans in the context of their religiosity… Read MORE open access.

NESP Series Evolution Vol 2 No 1 2014430+ downloads of Volume 2, Number 1: Paz-y-Miño-C G & Espinosa A. 2014. Acceptance of Evolution by America’s Educators of Prospective Teachers. New England Science Public: Series Evolution 2(1): 1-92 (ISSN: 2326-0971). In NESP Series Evolution Vol 2 No 1, Paz-y-Miño-C and Espinosa use the conceptual framework of the Incompatibility Hypothesis (i.e. science/evolution and belief in supernatural causation are incompatible) to document the patterns of acceptance of evolution of 495 Educators of Prospective Teachers affiliated with 281 colleges and universities widely distributed in 4 regions, 9 divisions, and 50 states in the United States. These higher-education professionals (65% PhD-, 22% doctorate-holders) were polled in five areas: (i) their views about evolution, creationism and Intelligent Design, (ii) their understanding of how science and the evolutionary process work, (iii) their position about the hypothetical ‘harmony or compatibility’ between science/evolution and supernatural causation, (iv) their awareness of the age of the Earth, its moon, our solar system and the universe, and the application of the concept of evolution to the cosmos, and (v) their personal convictions concerning the evolution and/or creation of humans in the context of the educators’ religiosity… Read MORE open access.

The Incompatibility Hypothesis: evolution vs. supernatural causation

Incompatibility Hypothesis Paz-y-Mino-C Espinosa

“Like the oil vs. water experiment, evolution and supernatural causation don’t mix. Evolution raises to the surface.”

Supernatural causation (i.e. the belief in a Supreme Being, creator and sustainer of the universe, omnipresent, omnipotent, omniscient) is a cultural pollutant, incompatible with empirical reality. “Belief” disrupts, distorts, delays and/or stops (3Ds+S) the correct comprehension and acceptance of evidence. We have postulated that the controversy over evolution-and-science versus creationism is inherent to the incompatibility between scientific rationalism/empiricism and the belief in supernatural causation. This hypothesis (= incompatibility) helps us understand and explain the everlasting and fluctuating antagonism –in cycles, from moderate to intense opposition during human history– in the relationship between science/evolution and religion… Read MORE and access free PDFs of scientific articles, including  Evolution Controversy: A Phenomenon Prompted by the Incompatibility between Science and Religious Beliefs published in the International Journal of Science in Society (abstract below) [PDF].

Cover Int Journal Science Society Paz-y-Mino-C and Espinosa 2015Evolution Controversy – Science in Society: Paz-y-Miño-C G & Espinosa A. 2015. Evolution Controversy: A Phenomenon Prompted by the Incompatibility between Science and Religious Beliefs. Int. J. Sci. Soc. 7(2). ISSN 1836-6236. The incompatibility between science and the belief in supernatural causation helps us understand why people do not accept evolution. Belief disrupts, distorts, delays, or stops (3Ds + S) the acceptance of scientific evidence. Here we examine the evolution controversy under three predictions of the incompatibility hypothesis. First, chronological-conflict-and-accommodation, which explains the historical re-emergence of antagonism between evolution and religion when advances in science continue to threaten the belief in supernatural causation; in such situations, creationists’ rejection of and subsequent partial acceptance of the new scientific discoveries are expected. Second, change in evolution’s acceptance is a function of educational attainment, which explains the positive association between acceptance of evolution and level of education. And third, change in evolution’s acceptance is a function of religiosity, which explains the negative association between acceptance of evolution and level of religious beliefs… We emphasize that harmonious coexistence between science and religion is illusory. If co-persisting in society, their relationship will fluctuate from moderate to intense antagonism. Read MORE open access [PDF].

At the Down House: Darwin’s Home

Down House Side View from gardens“I visited the Down House, Darwin’s Home, in July 2010. Here are a few pictures I wanted to share in celebration of the International Darwin Day, February 12. Prior to visiting the Down House, which is located just a few miles South East of London, I went to Canterbury, Kent, to attend the International Society of Protistologists (ISoP) annual meeting, at the University of Kent. Coincidentally, back in 1991, as an undergraduate student, I obtained a Diploma in Endangered Species Management from the University of Kent, which offered such certification in partnership with the Jersey Wildlife Preservation Trust (nowadays Durrell Wildlife Conservation Trust)”… Read MORE.

Some History about Darwin Day at the US Congress

Paul Broun R Georgia on Evolution

Click on image to watch video. Paul Broun (R) “All that stuff I was taught about evolution… all that is lies straight from the pit of Hell”

“…Bill H.Res.41, itself, embodies the never-ending battle against irrationalism, the latter vividly present in the views of those who see evil in truth and menace in the realities discovered by science. Take, for example, last year’s remarks by congressman Paul Broun (R), from Georgia, a physician and member of the House of Representatives Committee on Science, Space and Technology (the very Committee to which the “Darwin Day bill” was referred), who declared: “God’s word is true. I’ve come to understand that. All that stuff I was taught about evolution and embryology and the big bang theory, all that is lies straight from the pit of Hell.”

And Mr. Broun went on, as documented in video watched worldwide: “It’s lies to try to keep me and all the folks who were taught that from understanding that they need a savior.” “You see, there are a lot of scientific data that I’ve found out as a scientist that actually show that this is really a young Earth.” “I don’t believe that the earth’s but about 9,000 years old.” “I believe it was created in six day as we know them.” “That’s what the Bible says.” Read MORE.

Related Stories

Darwin’s Skepticism about God

Evolution Wars Debunk II

Why the Notion that “The Theory of Evolution is Not an Explanation for the Origin of Life” is Wrong

Evolution Stands Faith Up – On Francis Collins’ and Karl Giberson’s “The Language of Science and Faith”

Darwin’s Skepticism about God

EvoLiteracy News 02 08 2016 – Darwin’s Week

The yearly celebration of International Darwin Day (February 12) is approaching. Here are some of Darwin’s writings, which reveal how skeptical he became –with age and wisdom– about the existence of God. Despite this historical evidence, the pro-religion-in-science crowds, or para-creationists (i.e. theistic evolution, creation science, evolutionary creation), continue to mislead the public by spreading the meme that Darwin was, deep in his soul, a religious naturalist. And that is false. In 1879, Darwin wrote: “…an Agnostic would be the more correct description of my state of mind.” But read below what else Darwin wrote about The Old and New Testaments, Christianity and God in his Autobiography and later documents. – Guillermo Paz-y-Miño-C

On November 24, 1880 (two years before his dead), Darwin wrote in a “Private” letter:

Dear Sir

I am sorry to have to inform you that I do not believe in the Bible as Divine revelation, & therefore not in Jesus Christ as the son of God. Yours faithfully Ch. Darwin

Darwin's Letter Nov 24 1880

Darwin responded to Francis McDermott, who had requested in a note to Darwin: “…if I am to have pleasure in reading your books I must feel that at the end I shall not have lost my faith in the New Testament. My reason in writing to you therefore is to ask you to give me a Yes or No to the question Do you believe in the New Testament…” (Read McDermott’s complete letter here).

In Darwin’s Autobiography (excerpts below), first compilation published in 1958 (see complete text here), his skepticism about Christianity and God’s existence was obvious:

On the Old and New Testaments

“… But I found it more and more difficult, with free scope given to my imagination, to invent evidence which would suffice to convince me. Thus disbelief crept over me at very slow rate, but was at last complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct…”

I had gradually come… to see that the Old Testament from its manifestly false history of the world, with the Tower of Babel, the rainbow at sign… and from its attributing to God the feelings of a revengeful tyrant, was no more to be trusted than the sacred books of the Hindoos, or the beliefs of any barbarian.

Darwin's Dangerous Idea

“disbelief crept over me at very slow rate, but was at last complete”

By further reflecting that the clearest evidence would be requisite to make any sane man believe in the miracles by which Christianity is supported, — that the more we know of the fixed laws of nature the more incredible do miracles become, — that the men at that time were ignorant and credulous to a degree almost incomprehensible by us, — that the Gospels cannot be proved to have been written simultaneous with the events, — that they differ in many important details, far too important as it seemed to me to be admitted as the usual inaccuracies of eyewitnesses; — by such reflections as these, which I give not as having the least noveltry or value, but as they influenced me, I gradually came to disbelieve in Christianity as a divine revelation.

The fact that many false religions have spread over large portions of the earth like wild-fire had some weight on me. Beautiful as is the morality of the New Testament, it can hardly be denied that its perfection depends in part on the interpretation which we now put on metaphors and allegories.

But I was very unwilling to give up my belief; — I feel sure of this for I can well remember often and often inventing day-dreams of old letters between distinguished Romans and manuscripts being discovered at Pompeji or elsewhere which confirmed in the most striking manner all that was written in the Gospels.

But I found it more and more difficult, with free scope given to my imagination, to invent evidence which would suffice to convince me. Thus disbelief crept over me at very slow rate, but was at last complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct.

I can indeed hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believe, and this would include my Father, Brother and almost all of my friends, will be everlasting punished.

On Paley’s Argument for Design

“…There seems to be no more design in the variability of organic beings, and in the action of natural selection, than in the course which the wind blows…”

Bivalve Image Umbo

“the beautiful hinge of a bivalve shell”

Although I did not think much about the existence of a personal God until a considerably later period of my life, I will here give the vague conclusions to which I have been driven. The old argument from design in Nature, as given by Paley, which formerly seemed to me so conclusive, fails, now that the law of natural selection has been discovered. We can no longer argue that, for instance, the beautiful hinge of a bivalve shell must have been made by an intelligent being, like the hinge of a door by man. There seems to be no more design in the variability of organic beings, and in the action of natural selection, than in the course which the wind blows. Everything in nature is the result of fixed laws. But I have discussed this subject at the end of my book on the ‘Variations of Domesticated Animals and Plants,’ and the argument there given has never, as far as I can see, been answered.

On Suffering and Happiness in Nature

“…According to my judgment happiness decidedly prevails, though this would be very difficult to prove. If the truth of this conclusion be granted, it harmonizes well with the effects which we might expect from natural selection…”

Croc and Wildbeast

The problem of “suffering in nature”

But passing over the endless beautiful adaptations which we every­where meet with, it may be asked how can the generally beneficent arrangement of the world be accounted for? Some writers indeed are so much impressed with the amount of suffering in the world, that they doubt, if we look to all sentient beings, whether there is more of misery or of happiness; whether the world as a whole is a good or bad one. According to my judgment happiness decidedly prevails, though this would be very difficult to prove. If the truth of this conclusion be granted, it harmonizes well with the effects which we might expect from natural selection. If all the individuals of any species were habitually to suffer to an extreme degree, they would neglect to propagate their kind; but we have no reason to believe that this has ever, or at least often occurred. Some other considerations, moreover, lead to the belief that all sentient beings have been formed so as to enjoy, as a general rule, happiness.

On the Mental Organs, Perception of Pain, Hunger, Thirst, Fear and Pleasure

“…suffering is quite compatible with the belief in Natural Selection, which is not perfect in its action, but tends only to render each species as successful as possible in the battle for life with other species, in wonderfully complex and changing circumstances…”

Every one who believes, as I do, that all the corporeal and mental organs (excepting those which are neither advantageous nor disadvantageous to the possessor) of all beings have been developed through natural selection, or the survival of the fittest, together with use or habit, will admit that these organs have been formed so that their possessors may compete successfully with other beings, and thus increase in number. Now an animal may be led to pursue that course of action which is most beneficial to the species by suffering, such as pain, hunger, thirst, and fear; or by pleasure, as in eating and drinking, and in the propagation of the species… or by both means combined, as in the search for food.

But pain or suffering of any kind, if long continued, causes depression and lessens the power of action, yet is well adapted to make a creature guard itself against any great or sudden evil.

Chimps Hugging by Fernando Turmo

“We see [natural selection] in the pleasure from exertion, even occasionally from great exertion of the body or mind …especially in the pleasure derived from sociability, and from loving our families”

Pleasurable sensations, on the other hand, may be long continued without any depressing effect; on the contrary, they stimulate the whole system to increased action. Hence it has come to pass that most or all sentient beings have been developed in such a manner, through natural selection, that pleasurable sensations serve as their habitual guides. We see this in the pleasure from exertion, even occasionally from great exertion of the body or mind, (in the pleasure of our daily meals, and especially in the pleasure derived from sociability, and from loving our families). The sum of such pleasures as these, which are habitual or frequently recurrent, give, as I can hardly doubt, to most sentient beings an excess of happiness over misery, although many occasionally suffer much. Such suffering is quite compatible with the belief in Natural Selection, which is not perfect in its action, but tends only to render each species as successful as possible in the battle for life with other species, in wonderfully complex and changing circumstances.

On the Argument Against the Existence of an Intelligent “First Cause”

“…A being so powerful and so full of knowledge as a God who could create the universe, is to our finite minds omnipotent and omniscient, and it revolts our understanding to suppose that his benevolence is not unbounded, for what advantage can there be in the suffering of millions of the lower animals throughout almost endless time?”

Dead Whales What For

“the number of men in the world is as nothing compared with that of all other sentient beings, and they often suffer greatly without any moral improvement”

That there is much suffering in the world no one disputes. Some have attempted to explain this with reference to man by imagining that it serves for his moral improvement. But the number of men in the world is as nothing compared with that of all other sentient beings, and they often suffer greatly without any moral improvement. A being so powerful and so full of knowledge as a God who could create the universe, is to our finite minds omnipotent and omniscient, and it revolts our understanding to suppose that his benevolence is not unbounded, for what advantage can there be in the suffering of millions of the lower animals throughout almost endless time? This very old argument from the existence of suffering against the existence of an intelligent First Cause seems to me a strong one; whereas, as just remarked, the presence of much suffering agrees well with the view that all organic beings have been developed through variation and natural selection.

At the present day the most usual argument for the existence of an intelligent God is drawn from the deep inward conviction and feelings which are experienced by most persons. But it cannot be doubted that Hindoos, Mahomadans and others might argue in the same manner and with equal force in favour of the existence of one God, or of many Gods, or as with the Buddhists of no God. There are also many barbarian tribes who cannot be said with any truth to believe in what we call God: they believe indeed in spirits or ghosts, and it can be explained, as Tyler [cf. Edward Burnett Tylor] and Herbert Spencer have shown, how such a belief would be likely to arise.

On the Existence of Feelings as Argument for the Existence of God

“…I do not think that the religious sentiment was ever very strongly developed in me…”

“… It may be truly said that I am like a man who has become colour-blind, and the universal belief by men of the existence of redness makes my present loss of perception of not the least value as evidence. This argument would be a valid one if all men of all races had the same inward conviction of the existence of one God; but we know that this is very far from being the case…”

Formerly I was led by feelings such as those just referred to (although I do not think that the religious sentiment was ever very strongly developed in me), to the firm conviction of the existence of God, and of the immortality of the soul. In my Journal I wrote that whilst standing in the midst of the grandeur of a Brazilian forest, “it is not possible to give an adequate idea of the higher feelings of wonder, admiration, and devotion, which fill and elevate the mind.” I well remember my conviction that there is more in man than the mere breath of his body. But now the grandest scenes would not cause any such convictions and feelings to rise in my mind. It may be truly said that I am like a man who has become colour-blind, and the universal belief by men of the existence of redness makes my present loss of perception of not the least value as evidence. This argument would be a valid one if all men of all races had the same inward conviction of the existence of one God; but we know that this is very far from being the case.

Conductor Andris Nelsons Boston Symphony Orchestra

“The state of mind which grand scenes formerly excited in me, and which was intimately connected with a belief in God, did not essentially differ from that which is often called the sense of sublimity… [But] it can hardly be advanced as an argument for the existence of God, any more than the powerful though vague and similar feelings excited by music.”

Therefore I cannot see that such inward convictions and feelings are of any weight as evidence of what really exists. The state of mind which grand scenes formerly excited in me, and which was intimately connected with a belief in God, did not essentially differ from that which is often called the sense of sublimity; and however difficult it may be to explain the genesis of this sense, it can hardly be advanced as an argument for the existence of God, any more than the powerful though vague and similar feelings excited by music.

On Immortality as an Instinctive Belief

With respect to immortality, nothing shows me (so clearly) how strong and almost instinctive a belief it is, as the consideration of the view now held by most physicists, namely, that the sun with all the planets will in time grow too cold for life, unless indeed some great body dashes into the sun, and thus gives it fresh life.

The Sun

Immortality? Darwin: “the sun with all the planets will in time grow too cold for life”

Believing as I do that man in the distant future will be a far more perfect creature than he now is, it is an intolerable thought that he and all other sentient beings are doomed to complete annihilation after such long-continued slow progress. To those who fully admit the immortality of the human soul, the destruction of our world will not appear so dreadful.

On the Mystery of the Beginning of All and Self-characterization as Agnostic

“…This conclusion [the “First Cause”] was strong in my mind about the time, as far as I can remember, when I wrote the ‘Origin of Species;’ and it is since that time that it has very gradually, with many fluctuations, become weaker…”

Darwin Painting

“I deserve[d] to be called a Theist. This conclusion was strong in my mind about the time… when I wrote the ‘Origin of Species;’ and it is since that time that it has very gradually, with many fluctuations, become weaker.”

Another source of conviction in the existence of God, connected with the reason, and not with the feelings, impresses me as having much more weight. This follows from the extreme difficulty or rather impossibility of conceiving this immense and wonderful universe, including man with his capacity of looking far backwards and far into futurity, as the result of blind chance or necessity. When thus reflecting I feel compelled to look to a First Cause having an intelligent mind in some degree analogous to that of man; and I deserve to be called a Theist. This conclusion was strong in my mind about the time, as far as I can remember, when I wrote the ‘Origin of Species;’ and it is since that time that it has very gradually, with many fluctuations, become weaker. But then arises the doubt;– can the mind of man, which has, as I fully believe, been developed from a mind as low as that possessed by the lowest animals, be trusted when it draws such grand conclusions? May not these be the result of the connection between cause and effect which strikes us as a necessary one, but probably depends merely on inherited experience? Nor must we overlook the probability of the constant inculcation in a belief in God on the minds of children producing so strong and perhaps an inherited effect on their brains not fully developed, that it would be as difficult for them to throw off their belief in God, as for the monkey to throw off its instinctive fear and hatred of a snake.

“…[We must not] overlook the probability of the constant inculcation in a belief in God on the minds of children producing so strong and perhaps an inherited effect on their brains not fully developed, that it would be as difficult for them to throw off their belief in God, as for the monkey to throw off its instinctive fear and hatred of a snake…”

I cannot pretend to throw the least light on such abstruse problems. The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an Agnostic.

Corollary

In 1879, Darwin wrote a letter to James Fordyce:

What my own (religious) views may be is a question of no consequence to any one but myself. But, as you asked, I may state that my judgment often fluctuates… In my most extreme fluctuations I have never been an Atheist in the sense of denying the existence of a God. I think that generally (and more and more as I grow older), but not always, that an Agnostic would be the more correct description of my state of mind. — Evolution Literacy

Note: There are numerous extractions of “Darwin’s beliefs” from his Autobiography, some more exhaustive than others (see, for example, letters in What Did Darwin Believe?). Above, I summarized the text, broke it into shorter paragraphs, and introduced modern images and subtitles to facilitate the reading of the original narrative. I advise the reader to consult the original Autobiography for completeness.– Guillermo Paz-y-Miño-C 

The Elegant Feral Chickens of Hawaii – Moa

EvoLiteracy News 02 04 2016

I am gradually returning to posting on EvoLiteracy after some intense traveling (Hawaii) and finishing manuscripts that could not wait. Not unusual at the end of each year. Plus, I have a book in the making (coauthored with Avelina Espinosa), actually it is in production and shall be out soon.

Speaking of Hawaii. While in Oahu, Nature published a note on the feral chickens of Kauai, one of the smaller islands in the Hawaiian archipelago, located West of Oahu. I have been to Kauai once (2014); it is another amazing island, full of nature and less populated than Oahu (where Honolulu is located), or Maui, or the Big Island, which have substantial human development, large towns and cities.

The Hawaiian Archipelago Geology Com

Satellite view of the Hawaiian Archipelago (East islands). Image from Geology.com, click to enlarge.

The note on the feral chickens is short (you can read it here), but I found the beautiful illustration by Emily Willoughby (below) quite informative, a graphic summary of the story. Keep in mind that “feralization” is NOT domestication in reverse. Evolution does not work backwards, or in return to a previous stage; at least not in the way that some people may think. For example, if humans are left in the wild for many generations, say thousands of years, they will not “turn into” Neanderthals or early Cro-Magnons. That will simply not happen… Anyway, that is material for another posting.

As much as domestication, feralization is a complex evolutionary phenomena. Domestication is heavily driven by artificial selection (humans select); feralization is driven by natural selection (nature selects). To this we must add the fact that domestic and feral chickens are freely and constantly hybridizing in Hawaii. Therefore, the reader can imagine a continuum of phenotypes (and genotypes) in Hawaiian Gallus.

Feral Chickens Hawaii Illustration by Emily Willoughby

Illustration by Emily Willoughby, click on image to enlarge.

The feral chickens of Hawaii (Moa in Hawaiian) are indeed descendants of junglefowl ancestors (Gallus gallus) brought to the islands by Polynesian settlers (at least 1,000 years ago), but because some of the early birds lived in close proximity to humans, they developed domestic features, now hybridized with wild-type-like features “freely ranging” within the birds. For example, the comb size is under heavy sexual-selection pressure among the feral chickens, but it is under more relaxed selection among the domesticated birds. Overall, feral chickens have larger and more intensely colored combs than domestic chickens.

The domesticated birds do not incubate their eggs (a byproduct of humans constantly removing the eggs) as much as the feral chickens, and the feral hens seem to lay eggs less frequently (possibly seasonally) than their domesticated sisters. The feral birds grow faster than the domestic ones, which makes them, as adults, smaller than the domesticated chickens. The feral birds have grey legs, the domestic have yellow legs; however, both yellow- and grey-legs are common among the feral chickens of Kauai (does that tell you something?).

Finally, the plumage color is illustrative of the hybrid ancestry of today’s free-ranging roosters and hens of Kauai (i.e. a mix of junglefowl red-black plumage with the white feathers typical of the domestic chickens).

If interested in scientific info about the mixed ancestry and admixture in Kauai’s feral chickens, take a look at Gering et al. (2015), or the hybrid origin of the domestic chicken by Eriksson et al. (2008), or the genetic basis of traits that differentiate modern domestic species from their wild counterparts by Flink et al. (2013), or comparative analysis of the chicken genome by Hillier et al. (2004). Next time you visit Hawaii remember to honor these elegant birds. They are everywhere. — GPC

Twin Cascades Wailua Falls Kauai Photo G-Paz-y-Mino-C 2014

Aerial View of the Twin Cascades, Wailua Falls, Kauai. Photo GPC 2014

White-rumped shama Kauai Photo G-Paz-y-Mino-C 2014

Another introduced species in the Hawaiian Islands, the white-rumped shama (Copsychus malabaricus), photo taken in Kauai Island, GPC 2014

Suggested Readings

EvoLiteracy Update from Hawaii

Mauna Kea Telescopes to Sink in the Pacific