I'm a mathematician who studies evolution. I'm also a person who thinks about how people can find meaning and purpose in their lives. And so, combining these, I've spent a fair bit of time thinking about what, if anything, evolution can tell us about the meaning and purpose of human life.
My friend
Connor Wood recently
wrote on this topic. Specifically, he probed the question of why, precisely, many conservative religious traditions find the idea of evolution so objectionable. His argument is encapsulated in this quote:
I strongly suspect that evolutionary theory makes people so uncomfortable, not because it disagrees with Genesis (lots of things contradict Genesis), but because it presents a vision of a natural world whose “values” are fundamentally opposed to those of our religious cultures.
By "values" (in quotes because evolution is an amoral process), Connor is referring to the often violent struggle to survive and reproduce one's genes, which includes such behavior as
infanticide in some mammals and birds. While I agree with Connor's basic argument, I think it's not primarily the violence and struggle that offends some religious sensibilities (the Old Testament and many other religious texts are full of violence) but rather the inherent randomness and lack of ultimate purpose in the process.
Even though scientists generally don't intend it as such, evolution fills the role of a creation story. Like other creation stories, it explains where we came from and how we got here. But unlike other creation stories, it gives us few clues as to where we're going or what we're supposed to do. In fact, it tells us that we're the product of random events. If this randomness had gone differently, we might not be here at all. I think the randomness and lack of purpose implied by this story is why many people—including some who believe it as a scientific hypothesis—find the idea of evolution disturbing.
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| Where did all this come from?? What does it mean?? |
Interestingly, several thinkers have tried to turn this equation around, claiming that evolution can, in fact, satisfy our deepest psychological/spiritual needs. One of these is
Stuart Kauffman, one of the biggest names in complex systems. Kauffman's latest book,
Reinventing the Sacred, argues that evolution is such a creative and fundamentally unpredictable process that it can provide us with all the divine-like inspiration we need.
Unfortunately, Kauffman's idea doesn't quite get there for me. It's true that the variety of life is awe-inspiring, with more and more surprises the closer one looks. However, I think that just being awestruck by the beauty and creativity of nature is insufficient: it doesn't satisfy the questions of why we're here or what we should try to do with our lives.
Another approach is to focus on the potential of evolution to produce cooperation, creativity, and complexity. These aspects of evolution are highlighted in
Supercooperators, the new book by my boss and mentor Martin Nowak. I think one of the reasons for the past few decades' surge of research into this side of evolution (the "
snuggle for existence") is that it changes the story evolution tells about us, allowing us to understand how love, empathy, and compassion are also products of our evolutionary history.
But I don't find this to be of great philosophical comfort either. First, for every example of the evolution of cooperation, there's a complementary example of evolved selfishness and violence. Second, knowing that my feelings of love and empathy exist because they were successful traits in my ancestors doesn't make me feel better about them. In fact, it makes me feel worse. I want to think of these as fundamental to who I am, not some ploy to reproduce my genes. Every time I try to think about all my love and altruism as being a product of evolution, I become sad and want to stop thinking about it. Perhaps I'm just not thinking about it right, but I imagine others may have this difficulty too.
I made a handy (oversimplified) chart to summarize what I think evolution can and can't do for us in terms of filling philosophical/spiritual voids:
In short, my answer is that no, I don't think evolution can provide us with satisfying answers to many of our deepest questions.
Some atheists/materialists argue that the conversation should end here: There is no larger meaning or purpose to life, and any quest for such is a waste of time. But these questions are a real part of who I am, as real as love or anything else I feel. Doubtless, such searchings are products of evolution themselves. Yet to rationalize them away would be to deny a fundamental part of myself. Besides, if life truly has no purpose, then what would my time be better spent doing? Reproducing my genes? Why should I care about that either, if that's also just another artifact of evolution?
My approach is to grapple with these questions head on, knowing that there are no easy answers. Evolution—the most credible scientific theory as to how we got here—doesn't tell us where we're going or what to strive for. And yet it has implanted us with a deep need to plumb these questions. One could, I suppose, see this as a cruel joke that our evolutionary history has played on us. But I think these questions are as real and important as anything else we experience in life, and there is fulfillment and self-knowledge to be found in exploring them, even if we strongly suspect that satisfying answers will never be found.
