Researchers Defeat Randomness to Create Ideal Code

Suppose you are trying to transmit a message. Convert each character into bits, and each bit into a signal. Then send it, over copper or fiber or air. Try as you might to be as careful as possible, what is received on the other side will not be the same as what you began with. Noise never fails to corrupt. In the 1940s, computer scientists first confronted the unavoidable problem of noise.

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