The issue with polling 3^^^3 people is that once they are all aware of the situation, it’s no longer purely (3^^^3 dust specks) vs (50yrs torture). It becomes (3^^^3 dust specks plus 3^^^3 feelings of altruistically having saved a life) vs (50yrs torture). The reason most of the people polled would accept the dust speck is not because their utility of a speck is more than 1/3^^^3 their utility of torture. It’s because their utility of (a speck plus feeling like a lifesaver) is more than their utility of (no speck plus feeling like a murderer).
The issue with polling 3^^^3 people is that once they are all aware of the situation, it’s no longer purely (3^^^3 dust specks) vs (50yrs torture). It becomes (3^^^3 dust specks plus 3^^^3 feelings of altruistically having saved a life) vs (50yrs torture). The reason most of the people polled would accept the dust speck is not because their utility of a speck is more than 1/3^^^3 their utility of torture. It’s because their utility of (a speck plus feeling like a lifesaver) is more than their utility of (no speck plus feeling like a murderer).