Dance till it raines

Recently, I heard a story about the tribe that confounded all anthropologists. This tribe had for a long time enjoyed 100% success with its rain dance. In comparing this tribe to other tribes who did rain dance but who did not always experience success, the experts could not find anything that differentiated this one tribe.

Like all the tribes, they sometimes danced for days, even weeks on end. At the end, an astute observer noticed something remarkable. The successful tribe did one thing different from the other tribes: it always danced until it rained!

I need that kind of persistence