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Racer Sean Wrona (arenasnow)
Race Number 875
Date Mon, 6 Aug 2018 19:48:38 +0000
Speed 191 WPM Try to beat?
Accuracy 99.0%
Rank 1st place (out of 3)
Opponents andreaak00 (2nd place)

Text typed:

Property (c) is known as countable additivity. It is not something that can be proved, but it is like an assumption or an axiom. In our experience, we have seen that operating as if the assumption is correct leads to useful and credible answers to many problems, so we accept it as a reasonable assumption. Not all probabilists agree that countable additivity is natural.
Fundamentals of Probability: A First Course (book) by Anirban DasGupta (see stats)

Typing Review: