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Clouds are not spheres

"Clouds are not spheres, mountains are not cones, coastlines are not circles, and bark is not smooth, nor does lightning travel in a straight line."

Benoit Mandelbrot, The Fractal Geometry of Nature

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The concept of universities

I have always liked the concept of universities as they were in Ancient Greece, where folks who had something cool to say would just come and say it. It wasn't about recognition; the impetus was the thought that you were resonating with ideas. Donald E. Knuth

The best computer programs

"... The best computer programs are the ones in which the computer itself "disappears," in which you work directly on the problem without having to be aware of the computer." Donald Norman. in The Psychology of Everyday Things. -Basic Books, 1988, p. 180.