There's an article on CodeProject that shows a genetic algorithm tuning a neural network to simulate "ants" finding food. The ants start out kind of dumb, just milling around aimlessly (or more accurately, randomly). But some ants randomly have better food collection strategies (small direction changes, fast velocity) that means they collect more food than the other ants. At the end of each "generation" the low scoring ants are unceremoniously removed from the gene pool and the high scoring ants spread their successful food gathering strategies to their ancestors.
It's a grim view of life really. Are we all nothing more than the bearers of a successful food gathering strategy that has been passed down through the generations? Apart from the random droppings of food in the simulation and the ants' disturbing mechanical persistence at finding more and more of it, there is only darkness.
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