> Your eyes alight on the ski-ball machine, and you go over to start it. As one of the small spheres tumble down the chute, you pick it up and heft it in your hand experimentally.

Well, aye. But if that glass bends, maybe it can't be broken. And if that's the case, if ye throw something at it, then maybe it'll just bend more and cause the balls to move a bit better. Is that what ye meant, Doctor?