It looks at first blush like it’s out-predicting you, but it’s totally not! It’s just waiting for you to move with a high-speed camera, then snapping out its fingers really quick when you’re settled. That is the coolest. I am slightly disappointed that it’s not some sort of super-robot mind-freak machine predicting your every move, but I’m also more interested in replacing my limbs with robot parts than ever!
It only takes a single millisecond for the robot to recognize what shape your hand is in, and just a few more for it to make the shape that beats you, but it all happens so fast that it’s more or less impossible to tell that the robot is waiting until you commit yourself before it makes its move, allowing it to win 100% of the time. You might be thinking that you could fool the system by changing your mind halfway through, but my guess is that the hand and vision system are faster than your reflexes could ever be, and that it would be trivial for the robot to adapt to any creative moves that happens on the human end.