They find that changes in the occupation structure do not affect the wage structure, so if technology causes a shift from manufacturing to retail, this doesn’t necessarily entail a shift in the wage structure. They find that inequality is increasing within occupations, not between occupations as the SBTC narrative would predict. The SBTC narrative relies on the idea of an “education premium,” i.e., people with higher education reap the benefits of technological progress. But Mishel et al. find that wage inequality has grown strongly since the mid-’90s while the education wage premium grew little. Wages for college graduates have flattened over the last 10 years, even among science, technology, engineering and mathematics (STEM) and business occupations.