Quote:
Originally posted by robustpuppy
Explain please. If 106 billion people have been born, how is 8 billion pregnant women the right order of magnitude?
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Order of magnitude means add a zero to the end. 8 billion rounds to 10 billion. If there were 106 billion people ever, then there are 40-60 billion mothers ever. 10 and 40-60 are of the same magnitude.
