nshepperd comments on A Fervent Defense of Frequentist Statistics - Less Wrong
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This is not true, there are bijections between R and (0,1), but not the closed interval.
Anyway there are more striking examples, for example if you know that A, B, C, D are in a discrete finite set, it restricts yout choices quite a lot.
Did you mean to say continuous bijections? Obviously adding two points wouldn't change the cardinality of an infinite set, but "easy to compute" might change.
You're right, I meant continuous bijections, as the context was a transformation of a probability distribution.