Are you embarrassed by your lackluster darts skills? Do you dream of becoming a world-class darts player, but don't want to waste your time and energy practicing? Do you wish there was a way to hit a bull's-eye every time, no maker how many drinks you have had? All you need is a motion capture system, six stepper motors and controllers, the help of two NASA engineers, and a lot of math. YouTuber Mark Rober spent three years engineering and perfecting a moving dart board that guarantees a bull's-eye with each throw.