Dr. Ezekiel Emanuel

You have a very good memory there, Mark.

Yes.

It's a hundred percent.

Look, I mean,

you know, we have what's called the neocortex, neo, which is new cortex.

That's the part in the front of the head.

It's executive function, but it's also, it's there mainly for complex social relationships.

That's what distinguishes humans.

You know, we talk about language and this and that, but it's really our ability to have complex social relationships and

That's part of our brain structure, and it's critical.

And like other things, you got to use it to keep it in shape and keep it working.

Use it or lose it, as they say, and that really applies to the brain as much as to muscle.

I would say the other thing that is very important, and you've hinted at it with E.O.

Wilson and your own challenges of

So many people.

There is something called the Dunbar number, which is the number of people you can have as acquaintances that you can break bread with, you would have over.

And he points out, he's an anthropologist, I guess, emeritus now at Oxford.

And there's a Dunbar number, which is roughly- 150.

Exactly.

That's the number of people you can have as acquaintances.