Gabriel Zucman and his co-authors have become known for releasing these charts that go megaviral. In a new book, Zucman claims to have found that the 400 richest Americans now pay a lower tax rate than the bottom 50 percent of the country. This finding sparked outrage among the public, disagreement within the economics community, and debate among the democratic candidates for president last week.What do you need to know about Gabriel Zucman? And how does he envision fixing taxes in America?Guest: Jordan Weissmann is Slate’s senior business and economics correspondent.Slate Plus members get bonus segments and ad-free podcast feeds. Sign up now. Learn more about your ad choices. Visit megaphone.fm/adchoices