Comparing trolley accidents to rape is pretty ridiculous for a few reasons:
I think you’re missing my point; I’m not describing the scale, but the type. For example, suppose we were discussing racial prejudice, and I made an analogy to prejudice against the left-handed; it would be highly innumerate of me to claim that prejudice against the left-handed is as damaging as racial prejudice, but it might be accurate of me to say both are examples of prejudice against inborn characteristics, are perceived as unfair by the victims, and so on.
And so if you’re not trying to compare expected trauma, and just come up with rules of politeness that guard against any expected trauma above a threshold, setting the threshold low enough that both “prejudice against left-handers” and “prejudice against other races” are out doesn’t imply that the damage done by both are similar.
That said, I don’t think I agree with the points on your list, because I used the reference class of “vehicular violence or accidents,” which is very broad. I agree there’s an important disanalogy in that ‘forced choices’ like in the trolley problem are highly atypical for vehicular accidents, most of which are caused by negligence of one sort or another, and that trolleys themselves are very rare compared to cars, trucks, and trains, and so I don’t actually expect most sufferers of MVA PTSD to be triggered or offended by the trolley problem. But if they were, it seems relevant that (in the US) motor vehicle accidents are more common than rape, and lead to more cases of PTSD than rape (at least, according to 2004 research; I couldn’t quickly find anything more recent).
I also think that utilitarian thought experiments in general radiate the “can’t be trusted to abide by norms” property; in the ‘fat man’ or ‘organ donor’ variants of the trolley problem, for example, the naive utilitarian answer is to murder, which is also a real risk that could make the conversation include an implicit threat.
I think you’re missing my point; I’m not describing the scale, but the type. For example, suppose we were discussing racial prejudice, and I made an analogy to prejudice against the left-handed; it would be highly innumerate of me to claim that prejudice against the left-handed is as damaging as racial prejudice, but it might be accurate of me to say both are examples of prejudice against inborn characteristics, are perceived as unfair by the victims, and so on.
And so if you’re not trying to compare expected trauma, and just come up with rules of politeness that guard against any expected trauma above a threshold, setting the threshold low enough that both “prejudice against left-handers” and “prejudice against other races” are out doesn’t imply that the damage done by both are similar.
That said, I don’t think I agree with the points on your list, because I used the reference class of “vehicular violence or accidents,” which is very broad. I agree there’s an important disanalogy in that ‘forced choices’ like in the trolley problem are highly atypical for vehicular accidents, most of which are caused by negligence of one sort or another, and that trolleys themselves are very rare compared to cars, trucks, and trains, and so I don’t actually expect most sufferers of MVA PTSD to be triggered or offended by the trolley problem. But if they were, it seems relevant that (in the US) motor vehicle accidents are more common than rape, and lead to more cases of PTSD than rape (at least, according to 2004 research; I couldn’t quickly find anything more recent).
I also think that utilitarian thought experiments in general radiate the “can’t be trusted to abide by norms” property; in the ‘fat man’ or ‘organ donor’ variants of the trolley problem, for example, the naive utilitarian answer is to murder, which is also a real risk that could make the conversation include an implicit threat.