Mark Rober's dart board was much, much harder to create. The projectile was smaller and faster, and the board had to move to a much more precise location. Shane

Mark Rober's dart board was much, much harder to create. The projectile was smaller and faster, and the board had to move to a much more precise location. Shane's backboard only has to track a normal speed basketball and has a decently sized margin of error. Not trying to discount Shane's work at all, it's still very impressive, but not nearly as difficult a problem as what Mark Rober solved.