About cashew nuts (in raw form poisonous):

XXX: I wonder who thought it. A couple of centuries ago, a man decided to try to eat raw nuts, almost dying. He decided it was a challenge, and began to look for ways to eat this devil nuts?

Yyy: Also, as someone decided to catch pets, eat unknown plants and cultivate them, use the stone as a universal tool and breathe fire.
Oh, funny, but what if I spend my time on a dangerous hunt that will help me in the future!

zzz: Millions of years of evolution. Plants and animals adapt to different conditions, grow thorns, produce poison so that they are not eaten by any other animal. And then a man appears and begins to eat everything in a row. And what is poisonous or dangerous is called delicacies.