As I look back over the interviews I've done for this podcast, I've learned so much from

my guests and I've had a lot of fun.

But so far, only one guest has fundamentally changed my mind on a topic.

And that guest is Karl Hart.

Now I went into our conversation with strong views about drug policy that were very different

from his.

But Karl Hart has to say he's radical without a doubt.

By the end of the conversation, I was opening up to his ideas.

But now, eight months later, having thought more and more about it, I really think he's

right.

So here is that conversation with Karl Hart, I found so convincing.

Have a listen.

Are he and I both off our rockers?

Or should we indeed turn US drug policy completely upside down?

Karl Hart is not your typical academic.

Trained as a neuroscientist and now a psychology professor at Columbia University.

In his research studies, he brings heavy drug users into his lab for weeks at a time to

observe how drugs affect them and to learn about the decision making.

In his new book, Drug Use for Grownups, he argues for a radical overhaul of drug policy.

He's not just talking marijuana.

In his ideal world, heroin, methamphetamines, cocaine, they'd all be legal.

Welcome to People I Mostly Admire, with Steve Levitt.

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