Increasing the pool of generalizations would certainly help. So would keeping this fundamental problem in front of mind. My kid was an outlier because my gene

Increasing the pool of generalizations would certainly help. So would keeping this fundamental problem in front of mind. My kid was an outlier because my genetics tend to being tall and thin. If he was being measured against a set of healthy people with similar genetics he would not be considered an outlier - but this calculus is not considered when he is measured and judged aberrant. Our doctor being Indian was able to see from her experience that he was "normal" - for a kid with an Indian parent. Another doctor (like all the ones I grew up with) might not have the same insight and conclude there is a problem.