I don’t think many people have prior convictions about decision theory before they study it.
You picked literally the most extreme case, where 52.5% of undergraduates answered “insufficiently familiar,” followed by 46.1% for A- vs B-theory of time. The average for all other questions was just under 12%, 8.8% for moral realism, 0.9% for free will, 0% for atheism.
For Newcomb most undergrads are not familiar enough with the problem to have an opinion, but people do have differing strong intuitions on first encountering the problem. However, the swing in favor of two boxing for Newcomb from those undergrads with an opinion to target faculty is a relatively large chance in ratio of support from 16:18 to 31:21. Learning about dominance arguments and so forth really does sway people.
I just looked through all the PhilPapers survey questions, comparing undergrads vs target faculty with the coarse breakdown. For each question I selected the plurality non-”Other” (which included insufficient knowledge, not sure, etc) option, and recorded the swing in opinion from philosophy undergraduates to philosophy professors, to within a point.
Now, there is a lot of selection filter between undergraduates and target faculty; the faculty will tend to be people who think philosophy is more worthwhile, keen on graduate education, and will be smarter with associated views (e.g. atheism is higher at more elite schools and among those with higher GRE scores, which correlate with becoming faculty). This is not a direct measure of the effect of philosophy training and study on particular people, but it’s still interesting as suggestive evidence about the degree to which philosophical study and careers inform (or otherwise influence) philosophical opinion.
In my Google Doc I recorded an average swing from undergraduates to target faculty of ~10% in the direction of the target faculty plurality, which is respectable but not huge. Compatibilism rises 18 points, atheism 10 points, moral realism 12 points, physicalism 4 points, two-boxing by 15, deontology by 10, egalitarianism by 10. Zombies and personal identity/teletransporter barely move. The biggest swing is ~30 points in favor of non-skeptical realism about the external world.
That said, I agree the LWers who answered the survey questions in a LW thread were overconfident, that the average level of philosophical thinking here is lower quality than you would find in elite philosophy students and faculty (although not uniformly, if for no other reason because some such people read and comment at LW), and that some prominent posters are pretty overconfident (although note that philosophers themselves tend to be very confident in their views despite the similarly confident disagreement of their epistemic peers with rival views, far more than your account would suggest is reasonable, or than I would).
You picked literally the most extreme case, where 52.5% of undergraduates answered “insufficiently familiar,” followed by 46.1% for A- vs B-theory of time. The average for all other questions was just under 12%, 8.8% for moral realism, 0.9% for free will, 0% for atheism.
For Newcomb most undergrads are not familiar enough with the problem to have an opinion, but people do have differing strong intuitions on first encountering the problem. However, the swing in favor of two boxing for Newcomb from those undergrads with an opinion to target faculty is a relatively large chance in ratio of support from 16:18 to 31:21. Learning about dominance arguments and so forth really does sway people.
I just looked through all the PhilPapers survey questions, comparing undergrads vs target faculty with the coarse breakdown. For each question I selected the plurality non-”Other” (which included insufficient knowledge, not sure, etc) option, and recorded the swing in opinion from philosophy undergraduates to philosophy professors, to within a point.
Now, there is a lot of selection filter between undergraduates and target faculty; the faculty will tend to be people who think philosophy is more worthwhile, keen on graduate education, and will be smarter with associated views (e.g. atheism is higher at more elite schools and among those with higher GRE scores, which correlate with becoming faculty). This is not a direct measure of the effect of philosophy training and study on particular people, but it’s still interesting as suggestive evidence about the degree to which philosophical study and careers inform (or otherwise influence) philosophical opinion.
In my Google Doc I recorded an average swing from undergraduates to target faculty of ~10% in the direction of the target faculty plurality, which is respectable but not huge. Compatibilism rises 18 points, atheism 10 points, moral realism 12 points, physicalism 4 points, two-boxing by 15, deontology by 10, egalitarianism by 10. Zombies and personal identity/teletransporter barely move. The biggest swing is ~30 points in favor of non-skeptical realism about the external world.
That said, I agree the LWers who answered the survey questions in a LW thread were overconfident, that the average level of philosophical thinking here is lower quality than you would find in elite philosophy students and faculty (although not uniformly, if for no other reason because some such people read and comment at LW), and that some prominent posters are pretty overconfident (although note that philosophers themselves tend to be very confident in their views despite the similarly confident disagreement of their epistemic peers with rival views, far more than your account would suggest is reasonable, or than I would).