| Say you're getting mugged and the mugger opens with "If we accept that you don't have any right to your possessions, don't you agree that I'm justified in taking all your stuff?" It is not an intellectual or rhetorical shortcoming to then answer with "No, I agree neither with your premise nor with your conclusion." On the other hand, if you do D-Decouple and agree, then the mugger will either proceed to rob you immediately, or if an audience is present, they will first read aloud a well-prepared statement that 'proves' how you indeed don't have any right to your possessions - before inevitably proceeding to rob you. Not robbing you was never in the cards, they just made it seem that way by phrasing the question to provide an illusion of openness to discussion. People who accept D-Decoupling during a debate get steamrolled by bad-faith counterparts, and the audience on average will never remember that there was an "if" hypothetical in front of the question to begin with. In practice, the "If we accept X, then we must do Y" maneuver is seldom performed in good faith. It's merely a vehicle to move on to the Y part without concerning yourself with X, and it's mostly performed for the benefit of an audience who will only remember the Y part, or those who already agree with X. A side effect is also the gradual normalization of X through repetition. People who already agree with the premise will see nothing wrong with this, and that's not necessarily unethical. It only becomes unethical if the proposition has negative consequences and the "hypothetical" becomes a deniable position that allows the speaker to retreat behind if challenged. In other words, I do think the implications of the hypothetical part matter. Not all "If we accept X, then Y" have X's or Y's worthy of consideration. I would also argue that it's probably valid to look at the Y part in isolation. If Y is unethical or nonsensical, I believe there is no intellectual duty to consider any part of the argument. |