@ecombeckett cool idea but you don't need backspace on such premium real estate. map right cmd + hjkl to arrow keys and then you still have room to play with
@MercuriusFilius put 1 black ball in the empty bucket so it's 50% they pick that one or 50% they pick between 49 black and 50 white balls which in total gives 0.5 * 1 + 0.5 * (49/99) =0.75 probability