This week, Kurt Andersen calls a listener named Ken in New Hampshire who turns out to be Ken Burns, the filmmaker. Burns has a few good words for our latest listener challenge, like “a reel of documentary filmmakers” and “a scratch of DJs.” We ask what a rebranding of marijuana for the age of legalization might look like, and compare the effects of pot and alcohol on the creative process. Plus a performance from MacArthur Fellow Vijay Iyer, a jazz musician who always colors outside the lines.