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The Freedom from Religion Foundation (FFRF) published on its website an essay by Kat Grant titled “What Is a Woman?” in which Grant concluded that “A woman is whoever she says she is.” Along the way, Grant argued that there is no biological basis for distinguishing men from women.

Jerry A. Coyne, an emeritus professor at the University of Chicago and, at the time, a member of FFRF’s honorary board, requested permission to post a reply. Permission was granted. Coyne’s essay argued, in part, that the clear distinction between male and female gamete types shows there is a biological basis for maintaining sex is binary and that, moreover, one’s feelings cannot change one’s sex.
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FFRF then, without informing Coyne, removed his essay from its site. Dan Barker and Annie Laurie Gaylor, copresidents of FFRF, issued an apology for having posted the essay, calling it an “error of judgment.” Barker and Gaylor explained Coyne’s essay did not reflect “their values or principles” and regretted the “distress caused by [the] post.” They solemnly “committed to ensuring it doesn’t happen again.”