Season 9, Episode 50

Humans, it has long been thought, are the only animal to engage in economic activity. But what if we’ve had it exactly backward? Plus: the accidental futurist Kevin Kelly on why enthusiasm beats intelligence and why the solution to bad technology is more technology.

To find out more, check out the podcasts from which this hour was drawn: “The Invisible Paw” and “68 Ways to Be Better at Life.”