Kurt Andersen and his guest, the novelist Jonathan Lethem, discuss the pleasures and hazards of being alone. They’ll talk about the solitary work of writing a novel, and about musicians who ditch their bands to go solo. And we hear from Will Eno and James Urbaniak, the playwright and star of Thom Pain (Based on Nothing), the acclaimed one-man show running Off Broadway. Plus: a curator reveals the surprising depth of wallpaper, in Design for the Real World.