What is the rule of 30 and who came up with it?

I can't find the answer to this question and was wondering if anyone knew what is was.

asked by matt
  1. Rule of 30 is a one-dimensional binary cellular automaton rule introduced by Stephen Wolfram in 1983.

    posted by Anonymous
  2. I am not aware of any "rule of 30" that pertains to economics. However a "statistical" rule of 30 says, effectively, that one shouldnt make statistical inferences on samples of less than thirty.

    posted by economyst

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