“Cheers” actor Ted Danson’s latest series is the Netflix comedy “A Man on the Inside,” in which he plays a retired widower and investigator who goes undercover at a nursing home. Correspondent Tracy Smith talks with Danson and series creator Mike Schur (“The Good Place”) about how the show takes a clear-eyed look at aging. Danson also talks about aging gracefully, living as long as possible, and why he now feels “complete” in his life.