Dr. Keith Humphreys

But I'm comfortable talking about addiction.

It's a good word, it's scientifically meaningful, and it's something the public understands.

Oh, that's right.

Yeah, so Mark Schuchat who's a superb psychiatrist who's based in Southern California for most of his career did some wonderful studies of male children of alcoholic fathers.

And one of the things he showed is that when given alcohol, their body sway is less.

At a level you can't even perceive, but he could measure that.

Body sway.

Yeah, like how much they move, like how hard the alcohol hit them.

And they had fewer hangovers the next day.

And then you might think, well, that's great.

It doesn't hit you that hard, but you can drink a lot.

No, that's the problem because someone else would get the signal of like, whoa, I'm feeling kind of dizzy here.

I must have had too much to drink.

Or the next morning they get up and go, oh, God, I'm never doing that again.

They don't get that signal.

It's less punishing, more rewarding.

And you see that across drugs.

And this is almost surely genetic, how much people like,

different drugs, various norms.

I'll be personal about this.