In math, you are frequently faced with a problem that seems trivial, too trivial to even think about;
but when you think `OK, let's see how to actually solve this problem instead of just saying it's trivial and ignoring it'..  you see it's not clear at all how to solve it.

God said to the spirit: `I will send you with a glass of mediocre wine in your hand, to stand in the middle of a huge ocean made of the finest champagne. Some of the wine will spill from your glass. Your task will be to enjoy the champagne, rather than getting absorbed in frustration and resentment about the spilled wine. For starters, see if you can get to a place where you are not starting wars because you are so upset about the spilled wine. I give you an infinite amount of time to solve the problem.'

The spirit said `That's ridculous! Why bother?.. fine if you insist I'll show you how easy it is.'
..trillions of years later, the spirit is slowly, gradually, working out the solution.