Simulating Neural Networks with Mathematica
The ants need both food and water to gain energy and survive. They can choose to spend some of that energy to create a baby (another ant with a mutated version of the parent's brain). The interesting thing is that although the ants are initially very dumb, they eventually evolve to seek food and reproduce on their own. There is nothing forcing them to do either of those things, but only the ants that succeed at it can stay alive. I think this has some interesting philosophical implications about real-world lifeforms. It's also, perhaps, an interesting "proof" that natural selection really works (you can see it happen before your eyes!).
Source: The Lively Paradox
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