Pushkin.

The late American author and media critic Neil Postman once famously wrote,

technological change is not additive.

It is ecological.

A new technology does not merely add

something. It changes everything. Postman made this observation all the way back in 1992,

over a decade before smartphones and over a decade before the launch of social media platforms

like Facebook, Instagram, and TikTok. Postman's quote feels particularly relevant today, especially given what researchers around the

world are learning about the negative effects of these technologies.

Researchers like today's guest.

I'm Cass Sunstein. I teach at Harvard. I work on law and behavioral science.

I've been working for about seven years on social media and happiness

and the divergence between what people choose and what actually makes their lives better.

You might know Cass from his influential book Nudge,

which he co-authored with the Nobel Prize-winning economist Richard Thaler.

Nudge explores how small changes in our environments can influence the choices we make.

Or you may know casts from his work in the Obama administration,

where he helped bring behavioral science into public policy.

I headed the Office of Information at Regulatory Affairs,

analyzing the effects of regulations to make sure

that the benefits are higher than the costs.

Cass is one of the scholars in behavioral science that I really look up to. He's also one of the

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