Note from Sandra: Steve posted this as a joke, for being so outrageous as to be self-parody. It’s hard to convey irony in text, and Question Technology revealed that some people took it seriously. Omni Brain doesn’t endorse the views of the revealed source, psychologist/racist Linda Gottfredson. It is indeed a “snippet of junk floating around the web” (76 Google search results); I’m not sure where Steve found it but he’s not espousing racism, classism, sexism, or any other ism evident in this chart.
Or more appropriately… Why socio-economic status matters.