Your Brain is a Large Language Model (#368)

In today’s episode, I’m joined by social psychologist Dr. James Pennebaker from UT Austin to explore an uncomfortable truth: we don't use language to tell the truth—we use it to justify ourselves and protect our egos, whether we're explaining to our spouse why we didn't do the dishes or electing presidents based on confidence rather than facts.

We dig into why we're suckers for confident, simple speakers (explaining the rise of figures like Trump and Obama), how wisdom traditions manage to preserve truth despite our constant self-deception, why we've all retreated into communities that confirm our existing beliefs, and whether the 90% of values we actually share can compete with the 10% that's tearing us apart.

James brings decades of psychological research to help explain several cultural movements, like how politicians have become less logical but more confident over the past century and how evangelical Christian institutions have trained millions of people to tune out challenging information. 

We end wrestling with whether AI represents humanity's next great cognitive leap forward or just gives us shinier tools to build more convincing echo chambers—and why the answer might depend entirely on how we choose to use them.

James's Faculty Page

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