I fear this is another one of those interesting pop psychology articles that draws socially-oriented conclusions far above what the study itself actually shows.<p>It seems like an interesting result that the test subjects tended to mix up different people who they had already associated as being similar, according to them and in reference to their own lives.<p>I'm not sure that you can really extrapolate that to having any bearing on pigeonholing "others as blue-collar or professional, conservative or liberal, Black or white or Asian, man or woman, young or old."<p>Certainly not to the even more tenuous connection with "using people, which we’re taught early on not to do".<p>Disclaimer: I didn't read the original article, just the blog post summary of it.