There’s an interesting quote in this article about evolution and human beliefs.
The premise of Shermer’s book is that evolution left the human race with a tendency to make what he calls Type 1 errors — false positives, or beliefs in things that don’t exist. We also miss things that really do exist, which he calls Type 2 errors.
Evolution favors Type 1 errors because Type 2 errors are more likely to get you killed. If the grass rustles, and there’s a possibility it’s a lion, those who wrongly assume it’s nothing make a Type 2 error and end up as evolutionary dead ends. Those who tend to err the other way and imagine a few lions that don’t exist make Type 1 errors and survive.
Shermer concludes that evolution shaped us to be susceptible to figments of the imagination.
Elaborating on these Type 1 errors, Shermer describes a tendency to construct nonexistent patterns — “patternicity.” Another chapter details what he calls “agenticity” — our predilection to attribute accidental or natural occurrences to the conscious action of an agent.
For a professional skeptic and founder of Skeptic Magazine, Shermer is surprisingly forgiving of Type 1 errors. People who make a lot of these aren’t necessarily stupid, he said. Creative people can be particularly prone to patternicity, he said.
It is interesting to think of the answer to this question in light of these ideas. You will notice that these beliefs about the end of the world actually work quite well in an evolutionary sense.
The belief, itself, is a type 1 error, and thus, is harmless evolutionarily. The behavior of breeding like crazy is a good one to make sure your genes get to take over the gene pool.
I see these beliefs as signifiers or a certain set of genes. There is, as far as I can tell, no evolutionary advantage in thinking about the long term future. Perhaps one will show up. But right now there is a competition between those who want to breed like hell (the traditional way to ensure evolutionary survival) and the thoughtful, prepare for the future stance by not overburdening the environment.
It’s not clear to me who will win. It seems to me that the environmentalists are likely to volunteer to not breed, thus helping to ensure the evolutionary success of the breed like hellers. Perhaps it makes sense to breed first and cull later. But if you don’t have children, your genes will be a dead end. The non-breeders may help ensure the survival of other relatives. But it makes no sense to stop breeding entirely. The only way to make sure you have a future is to make sure you have future generations. You can’t do that if no one is there.