Because you don't get double experience points, roll the bones.
I'm not sure there is an answer anyone can give that will satisfy you as this is essentially a philosophical question masquerading as a game mechanics question, but experience points are not part of the doubling equation.
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I'm not sure there is an answer anyone can give that will satisfy you as this is essentially a philosophical question masquerading as a game mechanics question, but experience points are not part of the doubling equation.