See, everybody looks at the world from his own point of view. I call it the ground state of the resting mind. And your brain does the same thing, lef… - Charles Sheffield

Lop the top-end tail off the distribution of human intelligence and creativity," he went on, "and it would make no measurable difference to the population. Only one person in a billion is out beyond the six-sigma level. That's what we're talking about here. But eventually those one-in-a-billion make a huge difference. Ninety-five percent of all human progress comes from less than one thousandth of one percent of the population.

Hans Rebka sat on a rounded pyramid never designed for contact with the human posterior, and thought about luck.
There was good luck, which mostly happened to other people. And there was bad luck, which usually happened to you. Sometimes, through observation, guile, and hard work, you could avoid bad luck—even make it look like good luck, to others. But you would know the difference, even if no one else did.
Well, suppose that for a change good luck came your way. How should you greet that stranger to your house? You could argue that its arrival was inevitable, that the laws of probability insisted that good and bad must average out over long enough times and large enough samples. Then you could welcome luck in, and feel pleased that your turn had come round at last.
Or you could hear what Hans Rebka was hearing: the small, still voice breathing in his ear, telling him that this good luck was an impostor, not to be trusted.

That’s why we want it. Impossible gadgets are always the most valuable.