I think there are traits (eg critical thinking) in people that make them suited to different roles including coding but whether they had the opportunity to be a

I think there are traits (eg critical thinking) in people that make them suited to different roles including coding but whether they had the opportunity to be able to develop them early in life or later (even up until the point of getting their first interview with you) does not make much difference. Its a relatively small data point, but I do think its milk-able. For example for product managers without experience, finding out whether they have actively thought about how things are built the way they are or tend to be unnaturally frustrated by bad design they encounter in life is a relatively solid indicator of whether they will be succesfull. Its just one indicator though, your will still get false-positives and false-negatives.