Friday, August 26, 2011
Do Conservatives Hate Altruism?
Not surprisingly, Bachmann was wildly inaccurate. The president does not want people to earn only $200,000; he just wants slightly higher tax rates on people earning more than $200,000.
What Bachmann did not say, but clearly implied, was “Sucker.” Any rich like Buffett who would actually want to pay more taxes to help his fellow citizens must clearly be a sucker.
In encounters between animals of the same species, there are cooperators and there are defectors. Whenever a cooperator encounters a defector, the cooperator loses (becomes a sucker) and the defector wins. It would seem inevitable, in a world that consisted only of simple and direct interactions, the defectors always win, even though they cause themselves to become extinct. The world, however, is not that simple. Intelligent animals such as humans can recognize and remember one another as individuals, and they can remember the bad reputations of defectors and the good reputations of cooperators. In a world of complex interactions, cooperators can work together and drive the defectors into obscurity. In ways such as this, altruism (animals being nice to each other even if they incur a cost) can evolve.
Republicans clearly hate altruism. Some hate it more than others. Mitt Romney and Rick Perry do not make statements as extreme as those of Bachmann. It seems inconceivable to extremists like Bachmann that citizens should ever want to help each other. The Tea Party tirade of anger is not so much against “big government” as it is against a societal expectation that we, as fellow citizens, should be expected to help one another out, and that government should be a mechanism to facilitate altruism.
This conclusion is obvious not just from Bachmann’s statement, but from statements by the founding mind of modern extremist conservatism, Ayn Rand. She wrote, “If any civilization is to survive, it is the morality of altruism that men have to reject.” She was as wrong as anyone could be about anything, and so are her modern disciples. Humans are the most altruistic species, and the most successful, in evolutionary terms. Our survival cannot be assured if the Republicans succeed in destroying altruism.
Friday, August 19, 2011
What Rick Perry Thinks about Science
First, Rick Perry tells us that global warming is not happening. He says this despite the fact that his state, Texas, has already suffered $5.2 billion of damage from a year-long drought and its current heat wave. It is an unprecedented environmental catastrophe in Texas. He offered no evidence. He simply said, “from my perspective,” global warming is not reliable science. He used that phrase twice. Has he studied the issue? No, nor did he make any such claim. He just chooses not to believe it, and that settles it. But his position is rather frightening. Not only does he oppose taking actions to reduce our carbon emissions and to promote alternative energy sources, but he says we should not even be studying the issue. This seems to imply that he would have NASA and NOAA discontinue their investigations. Or else, might he require them to reach his conclusions?
Of course, Michele Bachmann uses even worse logic about global warming. In 2006, she said that we do not need to worry about global warming because Jesus has already saved the world. Of course, she does not say, “We do not need to worry about the economy, because Jesus has already saved the world,” or “We do not need to worry about terrorism, because Jesus has already saved the world.” She just picks out environmental issues and says, don’ worry, be happy.
Second, Rick Perry has come out against evolution. Typical of his smooth style, he did not say (as did the church marquee; see previous blog entry) that anyone who accepts evolutionary science is going to Hell. His words were almost innocuous. He said “It’s a theory that’s out there, and it’s got gaps.” He went on to say that “…in Texas, we teach both creation and evolution, and I figure you’re smart enough to figure out which one is right.” The problem is that he just presented his personal opinion as being the final conclusion of the matter. It does not require any further thought. He was even wrong about what is taught in Texas. They do not, as a matter of fact, teach creation in Texas (at least, according to the state guidelines). He has a right to his opinion, but he wants to make his opinion into federal policy if he is elected president.
Conservatives just make stuff up. To a conservative, it is not what you know, but what you believe. You can create reality by believing something to be true or untrue.
The rest of the world should be alerted that, if we have a Republican president starting in 2013, the United States will do absolutely nothing about global warming, and if Obama remains president, the Republicans will continue to prevent him from taking action. Rest of the world, take note: You will have to take the lead on resolving global warming, because the United States will not, and we may even discontinue researching it or paying attention to it. You will have to solve the problem without us. The same is also true of scientific leadership. Scientific research, in the United States, may soon become a mere restatement of Republican beliefs, no more to be trusted than Lysenkoist genetics from Soviet Russia. Rest of the world, take note: You will have to take the lead in scientific research, because the United States will not. The United States will ride the falling stars of fossil fuel dependence and creationism until they, and we, crash.
Friday, August 12, 2011
Does God Hate Darwin?
Monday, August 1, 2011
Why is Evolution so Slow?
The following is an excerpt from my new book, Life of Earth: Portrait of a Beautiful, Middle-Aged, Stressed-Out World, released earlier this year by Prometheus Books.
As we have seen in previous entries, evolution can occur rapidly enough to account for the diversity of life on this planet. Why, then, has evolution occurred so slowly? There are lots of mutations out there in populations, and selection can operate rapidly. If all of the conditions had been just right, life could have evolved into its many complex forms within just a few million years. Why didn’t it?
The answer to the question just posed is that the environmental conditions in which each population lives keep changing back and forth. Sometimes warm, sometimes cool. Sometimes wet, sometimes dry. And the interactions of species with one another keep changing. Evolution could make rapid progress, if there were some force directing it toward a goal, but instead it wanders around aimlessly—because evolution has no goal.
Consider one of the best-studied examples of evolution: the finches of the Galápagos Islands. In 1835, a British naval ship, H. M. S. Beagle, stopped at the Galápagos Islands, off the coast of Ecuador. The young naturalist on board, Charles Darwin, had just enough time to explore some of the islands. Based on what he saw, and what he heard from others, it appeared that each island may have had its own species of birds and tortoises, even though the islands all had a similar climate—brutally hot and dry, except in the misty mountains. When Darwin got back to England, the ornithologist John Gould identified many of the birds in Darwin’s collection as finches. It became obvious to Darwin that all of the finches, which differed greatly in size and in the way they gathered food, were the recent descendants of a kind of finch that lived on the mainland of South America. Evolution had occurred; it had occurred rapidly; and before long Darwin had figured out how it occurred: by means of natural selection. The original immigrant finch populations evolved different ways of getting food. These finches, now called Darwin’s finches, have become famous as the group of organisms in which the process of evolution was discovered.
American evolutionary biologists Peter and Rosemary Grant began an intensive study of these birds in the 1970s. They established their base on the island that the British called Daphne Major to study the process of natural selection, mostly in the medium ground finch Geospiza fortis. In order to study natural selection, it is necessary to demonstrate that the offspring of some of the birds survived better, and laid more eggs, than the offspring of other birds. Sounds easy? Not on your life. In order to do this, the Grants had to keep track of each bird. They had to know which birds mated with which other birds, how many eggs they laid, and then keep track of their offspring. And then do it again and again, every year. Even on that small island there are hundreds, sometimes thousands, of medium ground finches. The Grants, with the help of colored bands that they placed on the birds’ feet, became personally acquainted with hundreds of birds each generation, over the course of more than thirty generations.
In order to study natural selection, you have to choose a trait or feature that evolves and that can be measured. The Grants chose to measure beak size. Why beak size? Because a small difference in beak size, as little as a half of a millimeter, can make all the difference in what kinds of seeds the birds can crack open and eat. With a slightly larger beak, a finch can crack open and eat the seeds of puncture vines; with a slightly smaller beak, a finch can eat smaller seeds from other plant species.
The birds with the larger beaks preferred to crack and eat the larger seeds: they could get more food with each bite that way. Their beaks, however, were a little too unwieldy to efficiently handle the smaller seeds. The birds with smaller beaks simply could not eat the larger seeds, but were fairly adroit with handling the smaller ones. The population of finches always contained a mixture of small-beaked and large-beaked birds—in fact, a whole range of beak sizes.
Enter El Niño and La Niña. El Niño is a set of conditions in which strong ocean currents from the warm waters of the west bring lots of rain to the Galápagos Islands, as well as to much of North and South America. As a result, plants that produce small seeds grow profusely over the ground. El Niño is not necessarily a time of plenty for all organisms. During La Niña periods (when El Niño conditions are not occurring), strong ocean currents bring up cold water from the depths along the coast of South America, feeding marine life such as shrimp and fish and offering a bonanza to birds that eat them. El Niño (and the storms that come with it) is a blessing to some organisms, and a catastrophe to others.
The Grants measured finch beaks during a La Niña drought that began in 1977. Small seeded plants became rare, and large seeded puncture vines became common. Because more large seeds were available, it would make sense that natural selection would favor large beaks at that time. The Grants did not simply find that the average beak size in the finch population increased during the drought. They found that large-beaked parents laid more eggs, and their large-beaked offspring also laid more eggs, each generation. They had observed natural selection in the act of occurring.
Then in 1982 El Niño brought lots of rain. Very quickly, plants with small seeds sprang up all over the island, and puncture vines became rare. This time, natural selection favored the smaller-beaked birds, and it was the larger-beaked birds that went hungry and laid fewer eggs.
The fluctuation in beak sizes—first larger, then smaller—that the Grants observed was very small, on the order of about a millimeter. But this small change is very important to the survival of the birds. A change of a millimeter could occur within just a few years in a population. The Grants had observed rapid evolution: a rapid increase, then a rapid decrease, in beak size. The Grants had seen, and showed the scientific world, how rapidly evolution could occur.
Even more importantly, their work revealed why evolution usually does not occur rapidly even though natural selection does. The direction of natural selection changes often. Every ten years or so, the climate flops back and forth between El Niño and La Niña. The changes in beak size, on the order of a few years, are rapid; but on the order of centuries, the changes largely cancel one another out. The course of evolution wobbles rapidly along a very slow and often unvarying path. If Nature would just make up its mind, the way animal breeders make up their minds, Nature could breed its species a lot faster than it does. If only Nature had a mind and a purpose, which it does not.
Saturday, July 23, 2011
Altruism Under Attack
When I got to the “altruism” entry, I dutifully recited the scientific arguments for why humans are the most altruistic species. My summary is concise and interesting, but for a fuller picture, you can read Michael Shermer’s book The Science of Good and Evil: Why People Cheat, Gossip, Care, Share, and Follow the Golden Rule; and Frans deWaal’s book Age of Empathy. You can even read Dacher Keltner’s Born to Be Good. Well, maybe you don’t have to read the books. The subtitles tell you everything you need to know. Altruism is basic to the human psyche.
Their viewpoints are without doubt correct regarding the instinctual capacity that humans have for altruism. And I wish that I could believe that such altruism will actually prevail in the world. But I am sad to report that altruism is being strangled.
It is quite clear, on the national political scene as this blog is being posted, that the Republicans are willing to destroy the nation’s financial future in order to promote their power. Every thought they have and every action that they take is only for their own power. They have no sense that altruistic cooperation with Democrats would not only be good for the whole nation but also enhance their own electability in 2012. They seem oblivious to even the benefits they would receive from altruism. Rather than acting like altruistic humans, or chimps, or bonobos, they are acting like gorillas, using force as the sole means to consolidate their power.
And that is the way society is also. I am speaking, of course, from Redneck Central, in rural Oklahoma. I have neighbors—such people are all over the place in rural Oklahoma—who believe that they have the right to vandalize my property and threaten me with physical violence if I raise any objection to their vandalism. They act like gorillas, not chimps or bonobos or humans. When you look at them, they even look like gorillas; they look like they have been taking steroid injections since age six. Hundreds of thousands of years of human evolution, producing the capacity for altruism, has been jettisoned by these people in my neighborhood.
Oh, by the way, these people claim to be followers of Jesus Christ. I wonder if Jesus would have said, Blessed is he who destroys his neighbor’s property and threatens his neighbor with physical violence.
I dutifully write about the evolution of altruism—in my encyclopedia, as well as in my book Life of Earth—even though I no longer believe that there is enough of it left in American society to save us from social chaos.
Monday, July 18, 2011
What You Don’t Know About Evolution Can Kill You
Humans have developed many kinds of antibiotics. But for each of these antibiotics, there are populations of bacteria somewhere that have evolved resistance to them. Fortunately, not all bacteria have evolved resistance to all antibiotics. But some populations of bacteria, called “superbugs,” have evolved resistance to several kinds of antibiotics. Many of you, like me, have known someone who became ill or died from a resistant bacterial infection that they acquired in a hospital or nursing home.
It takes only a few years for populations of bacteria to evolve resistance to any particular kind of antibiotic, and it has taken only a few decades for resistance to antibiotics in general to become a major public health problem. Many viruses, such as HIV, have evolved resistance to antiviral medications as well.
In a similar fashion and almost as rapidly, populations of insects have evolved resistance to pesticides used to control them. There are many populations of insects, many of which spread diseases from one human to another, which will no longer die if you spray them. There are populations of disease-carrying rats that cannot be killed by rat poison. Environmentalist Rachel Carson pointed out in 1962 that the overuse of pesticides not only polluted the environment but also proved ultimately useless because of evolution: “If Darwin were alive today the insect world would delight and astound him with its impressive verification of his theories of the survival of the fittest. Under the stress of intensive chemical spraying the weaker members of the insect populations are being weeded out. Now, in many areas and among many species only the strong and fit remain to defy our efforts to control them.”
In all these ways, from the evolution of antibiotic-resistant bacteria to the evolution of pesticide-resistant vermin, agricultural and medical researchers (some of whom are creationists) have had to take evolution into account when developing strategies to control the spread of infectious diseases and pests. Germs and disease vectors are moving targets, and evolution is the reason for this. Evolution happens in hospitals (and down on the farm, too) not over the course of millions of years but over the course of just a few months. What you don’t know about evolution can kill you.
This entry appeared in my book Life of Earth: Portrait of a Beautiful, Middle-Aged, Stressed-Out World, from Prometheus Books.
Friday, July 8, 2011
Religion and evolution, again
Wouldn’t you know it, the very week that my book came out, I changed my mind. Religion is in fact a thing and it is instinctual.
The evidence for this includes the fact that, whenever you find religion, you nearly always find all of its components. Of course, Buddhism does not contain all of them. But, maybe Buddhism isn’t really a religion. This is what Sam Harris seems to think.
But the main thing that changed my mind was an experience that I had in a supermarket. I encountered a man whom I have known for years, and who has disputed with me for years about politics and religion. He is usually zealous, and I am quiet, in these disputes, but I at least imagined that there was an underlying respect. But this time he crossed the line. He drew a crowd by yelling at me about (as it turned out) his rejection of global warming. Before I could say much of anything, he drew out his main weapon: religion. He made it clear that he could not be wrong, because Jesus was on his side. Conservative Christianity was his sword, and he used it as such—as a discrete entity, not just as a loose collection of memes and feelings.
And then I was amazed as I observed myself do the same thing. I was swept away by zeal and made a religious argument against him. I said that Jesus was not his little finger puppet to use to win arguments. This was my weapon. Science is a set of memes, but when I had to reach for a weapon, I used religion. It was an instinctual, primal, and visceral reaction on my part. At the moment, it seemed to me as much of a single, coherent instinct as hatred, love, hunger, or thirst. Religion seemed to me to be a discrete entity, almost discrete enough to hold in your hand and use.
I am quite certain my thinking on this subject is not finished. And there is no reason that it should ever be. Next week I might go back to agreeing with Sir Richard. And maybe I can benefit from some of your insights. Feel free to share them in the comment box.