There is no effective difference between guessing a variable that is not random, but for which information is… — Nassim Nicholas Taleb

There is no effective difference between guessing a variable that is not random, but for which information is partial or deficient (...), and a random one (...). In this sense, guessing (what I don't know, but what someone else may know) and predicting (what has not taken place yet) are the same thing.

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