Or, it starts from a poor probability assignment in the first place.
Basically, prejudice as a bad thing is poor Bayesian reasoning, not all Bayesian reasoning. Unfortunately, many opponents of prejudice would insist on throwing out some good Bayesian reasoning as well.
In practice, it differs in that once an opinion is formed it’s sticky and contrary evidence tends not to result in updating.
Or, it starts from a poor probability assignment in the first place.
Basically, prejudice as a bad thing is poor Bayesian reasoning, not all Bayesian reasoning. Unfortunately, many opponents of prejudice would insist on throwing out some good Bayesian reasoning as well.