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Why some notes sound sweet together and others seem to fight
Play C and E together and they sound sweet. Play C and C sharp and they buzz. The notes aren't the problem: the clash only happens when they meet. Every…
How a computer adds 7 + 1 using nothing but switches
A computer chip has no idea what numbers are. It only has switches: billions of transistors that are either on or off. Yet wire a few of those switches into…