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Patience is bitter, but its fruit is sweet.
The concept of a black hole firewall challenges our understanding of quantum mechanics and general relativity.
The best programs are written so that computing machines can perform them quickly and so that human beings can understand them clearly. A programmer is ideally an essayist who works with traditional aesthetic and literary forms as well as mathematical concepts, to communicate the way that an algorithm works and to convince a reader that the results will be correct.