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Maktub. If I am really a part of your dream, you'll come back one day.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
The past is never dead. It's not even past.
In the old world, you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world, that inverts.