> Science has found repeatedly that using outward characteristics does not work as a good classification measure. Science has found that, on average, it works

> Science has found repeatedly that using outward characteristics does not work as a good classification measure. Science has found that, on average, it works [1]. Of course there will be many cases where it fails - that's how statistical inference works. Whether that makes it a 'good' measure, by whatever standard, is a different question. But there is no doubt information can be inferred from appearance. [1] http://www.spsp.org/news-center/blog/stereotype-accuracy-response http://www.spsp.org/news-center/blog/stereotype-accuracy-res...