On a second thought, maybe this is not about some generic “human judgment skill”, but different people sensitive to different sets of red flags (perhaps based on their previous experience). So Anna may notice some that other people missed, other people notice something that Anna missed, etc.
Problem is that the red flags are sometimes difficult to communicate; you often feel them rather than find them by conscious evaluation. Something like “this person makes me feel very scared, but I can’t put it in words why—every detail about them has a good explanation or an excuse, and probably each of those details individually would be okay on a different person, it’s just the entire setup plus some things I can’t even point my finger at”. Also, some things are difficult to put in words. But our society has a strong cultural taboo against excluding people without an accepted legible reason. (In extreme cases, not being able to explain why you excluded someone could result in a lawsuit.)
On a second thought, maybe this is not about some generic “human judgment skill”, but different people sensitive to different sets of red flags (perhaps based on their previous experience). So Anna may notice some that other people missed, other people notice something that Anna missed, etc.
Problem is that the red flags are sometimes difficult to communicate; you often feel them rather than find them by conscious evaluation. Something like “this person makes me feel very scared, but I can’t put it in words why—every detail about them has a good explanation or an excuse, and probably each of those details individually would be okay on a different person, it’s just the entire setup plus some things I can’t even point my finger at”. Also, some things are difficult to put in words. But our society has a strong cultural taboo against excluding people without an accepted legible reason. (In extreme cases, not being able to explain why you excluded someone could result in a lawsuit.)