Won’t legitimizing same-sex marriage lead to legitimizing polyamorous relationships too? If two men can marry one another, why not one man and two women? This argument is a favorite of former U.S. Sen. Rick Santorum, the so-called Christian right and the right-wing blogosphere.
Responding to these arguments is a challenge. On the one hand, I reject the tactic of distinguishing the good gays from the “bad” poly people. Further marginalizing the marginalized is just the wrong trajectory for any liberation movement to take. And it reminds me of the way that some mainstream gay activists have sold out transgender and gender-nonconforming groups. We’re the married gays who make neighborhoods stable and herald the arrival of cool coffeehouses; we’re not those awful drag queens. This is all trash, it sells out members of our own community who deserve more than that, and it’s a punt, really, not an argument.
On the other hand, I don’t want to fail to draw any distinction, either. I don’t know what polyamory’s approval ratings are, but I bet they aren’t high — Newt Gingrich notwithstanding. At the very least, it would be bad politics to agree and argue that there really is no difference.
How about this response, instead: to question whether the “slippery slope” is the right way to argue at all. Philosophically speaking, it certainly isn’t. You don’t decide the ethical value of a decision based on other decisions; you decide based on the decision at hand. Is euthanasia of a brain-dead human being morally permissible? Maybe or maybe not, but the answer does not depend upon the slippery slope of whether it’s permissible in other cases, say, of chronic pain, or mere dislike of aging. The slippery slope is a dangerous fallacy.
Of course, policy is not the same as philosophy, and in policy discussions, the slippery slope is commonplace. We draw bright-line rules to prevent slippery slopes all the time, even if the lines may be a little over- or under-inclusive. Driving a car while texting may be safe if you’re an excellent driver or if you’re on an empty road. But we as a society can’t get into those details, and if we allow even some texting, we might allow too much. So, bright line: no texting while driving.
Some value choices, though, are just too important for bright-line, prevent-slippery-slope decision making. Marriage is one of them. It affects too many people, and asks too many important questions on its own.
via www.salon.com




