I think it's a funny example of great UI discoverability still having failures. I say great because having the tilt keys adjacent to the paddle keys seems like

I think it's a funny example of great UI discoverability still having failures. I say great because having the tilt keys adjacent to the paddle keys seems like a setup for accidentally hitting tilt in a moment of heat, thereby leading to discovery of the tilt keys. Though perhaps 'moment of heat' is exactly when the player is least likely to realize they hit the wrong key.