Martyn Clark asks how economists factor idiosyncratic, unpredictable human behavior into their abstract modeling. Young Törless asks Glenn to weigh in on the presidential candidates’ approaches to—or avoidance of—the problem of the national debt. BB asks Glenn which economic theories or concepts haven’t stood the test of time. Stan asks what three policies would make the biggest difference in improving the lives of black people. Eli asks if technological progress and our ever-increasing knowledge about the world may end up being a bad thing for humanity. Luke Englund asks if the conservative movement has compromised too much for the sake of Donald Trump. And finally, therealnewyorker asks what issues I would feel compelled to talk about if racial politics disappeared tomorrow.