Those who believe that marriage is an evolving concept and that “same-sex marriage” is based on man’s new understanding of the nature of homosexual orientation fundamentally assert that “marriage” itself is a meaningless notion. If the concept of marriage has no fixed reference point beyond the evolving (constantly changing) mind of man, then no idea of marriage can have any permanence or claim to be the right view of marriage since, according to evolutionary dogma, man may yet progress to new understandings of marriage in the future. The logic of evolutionary thought also leads to the possibility that the idea of “same-sex marriage” will be rejected in the future as an ignoble phase of human development for which man should be ashamed. If it might be renounced in the future, on what ethical grounds can it be wrong to oppose it today?