For a game like Street Fighter, you can present to someone the time at which the first frame begins and all of the input events within the game and they can cal

For a game like Street Fighter, you can present to someone the time at which the first frame begins and all of the input events within the game and they can calculate the unique game outcome that results. It's a bit embarrassing that we cannot have the same property in applications that we interact with using our keyboards all day, and we must constantly look at them to see if they are behaving as if we have sent the inputs we have sent.