Have you ever wondered about the first man who has ever milked a cow thought he was thinking?

No. It makes perfect sense. Think about how long ago it would have been. It was probably done out of necessity. I have a cow. I have a baby, whose mother died giving birth. That cow has milk and her calf is healthy. Maybe it will keep my baby healthy too.

That's probably not the real story, but it will have been something like that. My wonder is more about how many people died of poisoning while discovering which plants were safe to eat and which would kill.