Some people argue that sugar should be regulated, like alcohol and tobacco, on the grounds that it's addictive and toxic. How much sense does that make? We hear from a regulatory advocate, an evidence-based skeptic, a former FDA commissioner — and the organizers of Milktoberfest.

If we could reboot the planet and create new systems and institutions from scratch, would they be any better than what we've blundered our way into through trial and error? This is the first of a series of episodes that we'll release over several months. Today we start with — what else? — economics. You'll hear from Nobel laureate Angus Deaton, the poverty-fighting superhero Jeff Sachs; and many others.