In late March, Hypatia, a feminist-philosophy journal, published an article titled “In Defense of Transracialism” by Rebecca Tuvel, an assistant professor of philosophy at Rhodes College in Memphis, as part of its spring 2017 issue. The point of the article, as the title suggests, is to toy around with the question of what it would mean if some people really were — as Rachel Dolezal claimed — “transracial,” meaning they identified as a race that didn’t line up with how society viewed them in light of their ancestry. Tuvel structures her argument more or less as follows: (1) We accept...