If A Doesn’t Get You, Then B Will

Nobody asked but …

When one argues that of two mutually exclusive cases, one choice is better than the other, it can never be empirically validated.  If you can measure one, it is precluding the other, which therefore cannot generate real data.  We run into this with tough immigration control vs. relaxed immigration control — you cannot have both.  Computer models do not solve this problem.

— Kilgore Forelle