Just to make sure I understand your claim: as I understand it, you would predict that if we raised the people I'm referring to in an environment where "Jews are stupid" was (perhaps artificially) a prevailing social belief, they would tend to reject that belief as they came to observe Jews, because their system Is would find that belief implausible, because Jews are not in fact stupid (relative to people-like-them, as a class). But if we raised them in an environment where "blacks are stupid" was a prevailing social belief, they would not tend to reject that belief as they came to observe blacks, because their system Is would find that belief plausible, because blacks are in fact stupid (relative to people-like-them, as a class).

Yes?

Would you also expect that if we raised them in an environment where "Jews are evil" was a prevailing social belief, they would not reject that belief as they came to observe Jews, because their system Is would find that belief plausible, because Jews are in fact evil (relative to people-like-them, as a class)? Or does the principle not generalize like that?