It does nothing, but men have worn it for 400 years. Behind the origin of the necktie

The necktie holds nothing, protects nothing, and fastens nothing — men have worn it for 400 years anyway. The story runs from Croatian cavalry in the Thirty Years' War, to a 21-year-old Louis XIV who fell in love with their scarves, to a New York tie maker whose 1920s patent still shapes nearly every tie made today. Episode 59 of Chasing Beauty: the design behind the thing that does nothing.