Recently I’ve been watching videos and playing around with free downloads for various “evolution simulators” such as The Life Engine or The Bibites. These simulations are somewhat like Conway’s Game of Life, but produce critters with various “physical” attributes, random mutations in offspring, and they have a “brain” that can learn things.
(See here for an explanation of how Life Engine works from the creator).
One of the things that quickly becomes very apparent is that it does not pay to become attached to any particular “species” that evolves in these simulations. Something might emerge in, say, the section in the top left of the picture below (Life Engine – the grey lines have been drawn in by me to create an “environment”) which looks awesome and kick-ass, armored and armed to the teeth, which if funneled to compete against other existing life forms in the simulation (that’s what the central sections are for, 2 species enter, 1 species leaves kind of thing, Thunderdome!) destroys them all, but which if left simply to evolve in and spread out from that top left section are likely to not end up getting very far, to be confined and held back by “lesser species” in the area adjacent to the top left section.
Watching and playing around with these simulations is affecting the way I perceive life on Earth. It is giving me a new perspective on the oft-quoted 99% of all species that have ever existed have become extinct. So many times I’ve spotted a new organism and thought it was going to quickly end up dominating the ecosystem, only for it to fail at doing so for some seemingly minor reason (eg the random dashes at the bottleneck opening in the gray wall – remove them and things happen differently). Or a species has come to dominate and it looks like it will last forever, but then I make a small change to the environment or some unassuming other species appears which quickly out-competes the dominant life. I’m starting to view life on Earth and the evolution that happens to that life more holistically, coming to the view that individual species are not really that important, and that human angst over the loss of any particular species is probably misplaced.
Obviously it would be a bad thing if humans sterilized the planet, but this “no new extinctions” thing seems like a bloody ridiculous goal, and contrary to how stuff actually works. As a concept, it’s more artificial than just allowing evolution to do it’s thing in an environment which includes human activity.
