 And he said, you know, he said the throat, okay, the reason that babies put objects in their mouth, because they're not seeing their parents. I mean, they are, but they're not seeing them pick stuff up off the floor and put it in your mouth, is because they're building their immune system. And we have more or less kind of a hidden, more hidden immune system located in the throat. Things go through the body, through the mouth, and our body knows whether to reject them or not, okay? And so we're building this immune system throughout our lives. That's how it works.