Парадоксы Эллсберга, Алле, Канемана, Тверски

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Ellsberg Paradox

There is one urn with with 300 balls: 100 of these balls are red (R) and the rest are either blue (B) or yellow(Y). Consider the following two choice situations:

1. Win $100 if a ball drawn from the urn is R and nothing otherwise.
          Win $100 if a ball drawn from the urn is B and nothing otherwise.
2. Win $100 if a ball drawn from the urn is R or Y and nothing otherwise.
          Win $100 if a ball drawn from the urn is B or Y and nothing otherwise.