Well, there are limits, we know because they tell us so. There's death and gravity, and if a frog could sprout wings, maybe his ass wouldn't bounce on the ground so much; but maybe the limits aren't as clearly defined as we think. Maybe it pays to test those limits once in a while. Maybe we really have nothing to lose. Maybe it's possible to "ask for the impossible." And if we did, maybe our idea of what's possible and what is not, would melt in the light of a grand wonder.