but erm, you know, there's a wonderful picture, i don't know if you've seen it, by salvador dali, called sleep, which is a kind of head-like figure, it's a figure which is mainly a head with a kind of sheet draped over it, supported on crutches, lots of crutches, and this kind of represents this, and the idea that if one of the crutches were to move, the figure would wake up.