-It's an empirical issue—but sure, very often, yes. For most jobs—especially most jobs in an industrialized Society like dath ilan—"always test the individual's aptitude, never use sex as a proxy" is a fine rule, because most jobs primarily rely on human general intelligence: there was no _dentistry_ in the environment of evolutionary adaptedness, and thus there's no reason why women or men should make better dentists.
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+But if you take probability and expected utility seriously—and everything we've been told about dath ilan says that that's what their Civilization is _all about_—then the quantitative extent to which the statement "It's wrong to make _X_ decision about me just because I'm _Y_" makes sense, depends quantitatively on how strongly _Y_ predicts the outcomes of _X_. Whether _Y_ is an "individual trait" like having Intelligence 18 or a demographic category like being female _does not matter_.
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+[TODO: we talk about Keltham being different "because" he's a dath ilani]
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+As far as principles are concerned, anyway. But pragmatically, might it not be the case in practice, that statistical group differences are small enough, and that individual trait measurements are cheap and reliable enough, such that "don't discriminate by race or sex" is a useful _heuristic_?