> When I graze in the backyard... I don't brush off all the dirt. Given everything we know, this doesn’t seem too reasonable to me. I’m sure those hunters and

> When I graze in the backyard... I don't brush off all the dirt. Given everything we know, this doesn’t seem too reasonable to me. I’m sure those hunters and gatherers would have loved a reliable way to purge those parasites from their digestive system. Even better if they didn’t require removing them in the first place.