+Alexander gives an account of a woman whose ability to function at her job was being disrupted by obsessive-compulsive fears of leaving her hair dryer on at home, whose problems were solved by the simple expediency of taking the hair dryer with her when leaving the house. Given that it _worked_ to resolve her distress, we shouldn't care that this isn't how problems that are categorized as _obsessive-compulsive disorder_ are "supposed" to be treated, and Alexander argues that the same should go for accepting transgender identity claims: if it _works_ for resolving people's gender dysphoria, why not?
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+The problem is that there are _significant disanalogies_ between leaving a hair dryer in the front seat of one's car, and collectively agreeing that gender should be defined on the basis of self-identity. Most significantly: the former has no appreciable effects on anyone but the person themselves; the latter affects _everyone who wants to use language to categorize humans by sex_. The words _man_ and _woman_ [are top-20 nouns](https://en.wikipedia.org/wiki/Most_common_words_in_English#Nouns)! People need those nouns to describe their experiences!
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+Even if it's only a small cost to be socially required to say _woman_ and _she_ to refer to someone whom one would otherwise be inclined to call a _man_—and to let them in to any corresponding sex-segregated spaces, _&c._—that cost needs to be aggregated across everyone subject to it, like so many dust specks in their eyes. Imagine if the patient in the hair dryer story were obsessed with the fear not just that _she_ might accidentally leave her hair dryer plugged in unattended, but that that _someone_ might do so, and that it would burn down the whole city. In this slightly modified scenario, insisting that everyone in the city put their hair dryers in the front seat of their cars doesn't look like an appealing solution.