they figured out that some mushrooms are edible and others are poisonous?
they figured out to grind up wheat to make flour?
they decided that letting stuff ferment made it fun to drink?
you don’t have to wade or swim across a river to get to the other side?
some snakes are poisonous and others aren’t? (same for spiders and other creepy crawly things)
that cooking stuff made it easier to eat?
blah, blah, blah…