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**The
Question:** Suppose that you have two buckets of sand, bucket A and bucket
B. Bucket A contains a certain volume of
pure white sand, and Bucket B contains exactly the same volume of pure black
sand. Now suppose you take a teaspoon of
sand from bucket A and pour it into bucket B, and stir bucket B thoroughly;
then take a teaspoon of sand from bucket B and pour it back into bucket A. After doing this, does bucket A have more
black sand, or does bucket B have more white sand? (i.e. which bucket has more
impurities in it)?

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**Argument
II:** The teaspoon of sand that one transfers from bucket A to bucket B is
pure white sand, but the teaspoon that one transfers from bucket B to bucket A
is only mostly black sand. Thus bucket A
should end up with slightly less impurities than bucket B.

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For the countervailing argument, click here.