So when I see the parents hand sanitizer on the tray and all of that, I don't know what's going on with that kid. That kid could have a very serious immune deficiency syndrome or some other reason, but most of the time it's a terrible idea because the kid is not catching Ebola from the tray.

And what we have, what we clearly know now is that being too clean is worse than being dirty by far. Let them get dirty. It's great. Like a dog is a lot of work. So I'm not advocating for a dog if you don't have one, but there's studies that show that households with children who have dogs, the kids end up on fewer antibiotics.

They have fewer autoimmune diseases because a dog is bringing some dirt and some outdoors into your house.