Reading the first chapter alone (in particular the section on commodity fetishism) will tell you all you need to know about how economists think, because it tells you why economists think. This is a domain of inquiry that is necessary for any science, but that the economists since Marx have ran from for reasons Marx exposed in Capital itself. Notice that the OP article doesn't even try to justify its categories. How do economists think? Marx responds very simply: ideologically, dogmatically.