For the record: I’m not sold on “completely reasonable to prefer just that” at all. It may be simply because I experience almost no jealousy—the only “rules” in my relationship are about the things that could actually hurt me (whether I knew what she was up to or not) - but I really don’t see the cheating itself as a problem. Now, it does indicate that your partner is less trustworthy, less true to their promises, than you might have expected. That could be a problem. But in the hypothetical situation that my partner only breaks promises in ways that A) I won’t know, and B) won’t hurt me, I really don’t care. Who am I, to control my partner’s life that way? Of course, I’m highly unlikely to ever enter into an arrangement as described in the first place, so I’m not the hypothetical alternative Gal being discussed in any case.
However, there’s another difference: with the car, Gal can—at need, or simply for fun—pop the hood and see the thing that pierces the illusion. In order for the illusion to persist, she needs to literally never look at the gasoline engine that she “thinks” powers the car. Whereas with the infidelity, so long as one doesn’t stalk one’s partner or compel them to tell the truth about their faithfulness, one would never be the wiser. The illusion of faithfulness really is as good as the real thing, and that’s just not true of the car unless you’re some weird sort of internal combustion fanatic who would never actually try to look upon their own engine.
But you’re not “most of us”. The sentiment is common enough that any attempt to distill human morality down to principles has to take it into account, or at least state outright “this system is at odds with most people’s ideas of morality, and is designed to be so from the start”.
Gal can—at need, or simply for fun—pop the hood and see the thing that pierces the illusion.
It’s an analogy. If it’s used for mind uploading or copying, Gal can’t “pop open the hood” and see that she doesn’t have continuity of identity with the original Gal.
For the record: I’m not sold on “completely reasonable to prefer just that” at all. It may be simply because I experience almost no jealousy—the only “rules” in my relationship are about the things that could actually hurt me (whether I knew what she was up to or not) - but I really don’t see the cheating itself as a problem. Now, it does indicate that your partner is less trustworthy, less true to their promises, than you might have expected. That could be a problem. But in the hypothetical situation that my partner only breaks promises in ways that A) I won’t know, and B) won’t hurt me, I really don’t care. Who am I, to control my partner’s life that way? Of course, I’m highly unlikely to ever enter into an arrangement as described in the first place, so I’m not the hypothetical alternative Gal being discussed in any case.
However, there’s another difference: with the car, Gal can—at need, or simply for fun—pop the hood and see the thing that pierces the illusion. In order for the illusion to persist, she needs to literally never look at the gasoline engine that she “thinks” powers the car. Whereas with the infidelity, so long as one doesn’t stalk one’s partner or compel them to tell the truth about their faithfulness, one would never be the wiser. The illusion of faithfulness really is as good as the real thing, and that’s just not true of the car unless you’re some weird sort of internal combustion fanatic who would never actually try to look upon their own engine.
But you’re not “most of us”. The sentiment is common enough that any attempt to distill human morality down to principles has to take it into account, or at least state outright “this system is at odds with most people’s ideas of morality, and is designed to be so from the start”.
It’s an analogy. If it’s used for mind uploading or copying, Gal can’t “pop open the hood” and see that she doesn’t have continuity of identity with the original Gal.