Freakonomics Radio

Every year, Americans short the I.R.S. nearly half a trillion dollars. Most ideas to increase compliance are more stick than carrot — scary letters, audits, and penalties. But what if we gave taxpayers a chance to allocate how their money is spent, or even bribed them with a thank-you gift?

Innovation experts have long overlooked where a lot of innovation actually happens. The personal computer, the mountain bike, the artificial pancreas — none of these came from some big R&D lab, but from users tinkering in their homes. Acknowledging this reality — and encouraging it — would be good for the economy (and the soul too).

There are a lot of barriers to changing your mind: ego, overconfidence, inertia — and cost. Politicians who flip-flop get mocked; family and friends who cross tribal borders are shunned. But shouldn’t we be encouraging people to change their minds? And how can we get better at it ourselves?

A recent outbreak of illness and death has gotten everyone’s attention — including late-to-the-game regulators. But would a ban on e-cigarettes do more harm than good? We smoke out the facts.

For nearly a decade, governments have been using behavioral nudges to solve problems — and the strategy is catching on in healthcare, firefighting, and policing. But is that thinking too small? Could nudging be used to fight income inequality and achieve world peace? Recorded live in London, with commentary from Andy Zaltzman (The Bugle).

It’s an acutely haphazard way of paying workers, and yet it keeps expanding. We dig into the data to find out why.

Do economic sanctions work? Are big democracies any good at spreading democracy? What is the root cause of terrorism? It turns out that data analysis can help answer all these questions — and make better foreign-policy decisions. Guests include former Department of Defense officials Chuck Hagel and Michèle Flournoy and Chicago Project on Security and Threats researchers Robert Pape and Paul Poast. Recorded live in Chicago; Steve Levitt is co-host.

For decades, there’s been a huge gender disparity both on-screen and behind the scenes. But it seems like cold, hard data — with an assist from the actor Geena Davis — may finally be moving the needle.

It used to be a global capital of innovation, invention, and exploration. Now it’s best known for its messy European divorce. We visit London to see if the British spirit of discovery is still alive. Guests include the mayor of London, undersea explorers, a time-use researcher, and a theoretical physicist who helped Liverpool win the Champions League. Dan Schreiber from No Such Thing as a Fish rides shotgun.

In 2016, David Cameron held a referendum on whether the U.K. should stay in the European Union. A longtime Euroskeptic, he nevertheless led the Remain campaign. So what did Cameron really want? We ask him that and much more — including why he left office as soon as his side lost and what he’d do differently if given another chance. (Hint: not much.)