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Some tribes have a drug with sophisticated preparation steps from multiple plants and they claim the plants spoke to them about their ability. Carrots were pencil thin woody roots, almonds were fatal, bananas were half rock hard seeds, rice was just another grass, wolves were skittish and bare their teeth at humans. How did ancient humans see potential in them?

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I would imagine that a lot of wild plants that we regard as not particularly edible can look much more enticing when that's basically your only choice of food.

As far as wolves, it's still an open question as to how much they "self-domesticated" before humans noticed and started working from the other end. Seeing how human encampments would produce delicious food scraps in refuse (and still do, just ask any black bear!), it stands to reason that some animals would try to cash in on that opportunity. Then you have a selection process whereby the ones that are too skittish would not even bother, and the ones that are too aggressive would be chased away or worse.

The book "Guns Germs and Steel" has some good answers to that question.

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