double standard
For a person who claimed X=A in one situation C1 and X=B in another situation C2
A phrase often used by those who insist that "A≠B, so X=A and X=B are incompatible."
You can invalidate it by arguing that it's a false abstraction that's discarding the situation. It's funny that you assume X is implicitly a constant.
It is actually a function of the situation [$ f(\cdot)
There is nothing wrong with [$ f(C_1) = A, f(C_2) = B
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