@alyx @icedquinn My assumption is:
Grugs grugging
Long time
Grugs notice when other Grugs die
Grugs come up with reasons, usually wrong ones
Eventually Grug notices the real reason
Grug stays away from that reason
It's more reductive than additive, people eat everything and stop eating what kills them, like babies putting things in their mouth and spitting them out when they're bitter, so does the group of individuals (like a group of cells) "spit out" (make taboo, label as poison, learn not to eat) bad foods, and all that are left are the ones that aren't bad.
Then things get weird with shit that actually hurts to eat but isn't toxic, like peppers, that probably took a long ass time for us to understand. I mean as recently as 50 years ago people thought spanish and italian people were so "hot tempered" because of their "spicy" food...which is retarded.