Opponents of same-sex marriage often ask, "If we allow gays to marry, why not polygamy? Why not incest?" and so on. Here, John Corvino exposes the fallacy in this slippery-slope argument.
Dr. John Corvino, also known as the "Gay Moralist," is a writer, speaker, and philosophy professor at Wayne State University in Detroit. He is the co-author, with Maggie Gallagher, of the book Debating Same-Sex Marriage (Oxford Univ. Press, 2012).
