Symbolic reasoning turned out to be a versatile gadget. Our
evolutionary ancestors didn’t have to keep falling into the same
quicksand pit if they could tell others about it; even better if they
learned to put up warning signs. With words and language, we could
extract a great deal of knowledge about our living situation without
always having to experience its harsh lessons directly. So it makes
sense that once our brains developed symbolic reasoning, we kept it.
The brain is a biological tissue; it follows the rules of biology. And
there’s no bigger rule in biology than evolution through natural
selection: Whoever gets the food survives; whoever survives gets to
have sex; and whoever has sex gets to pass his traits on to the next
generation. But what stages did we go through to reach that
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