At a Sutherland Institute event in April 2011, Maggie Gallagher noted that victory in a war comes when one side believes it is no longer worth fighting. Thus, one of the most important arguments made by those who want to redefine marriage is that same-sex marriage is inevitable.
Of course, like the “inevitable” triumphs of Marxism, etc., the facts sometimes get in the way and advocates will need to push things along. So, lawsuits are filed in friendly courts to get marriage redefinition mandated, or sympathetic public officials change ballot titles to make voting for husband-wife marriage seem less palatable.
Inevitability is a prediction, or perhaps a veiled threat, so it can’t be tested prospectively. We can assess the likelihood this prediction will be fulfilled, though.
How does the inevitability argument hold up based on past experience? It’s a long shot.