political entities is not just people voted into office, it's also unelected high-level policy-setting bureaucrats like cabinet officials, chairpersons of the f

political entities is not just people voted into office, it's also unelected high-level policy-setting bureaucrats like cabinet officials, chairpersons of the federal reserve, etc, who have the right higher education credentials that get them to the place where they are, so that the elected folks can claim "I know how how to hire the. best. people." so you must also consider educational trends in social sciences and social policy schools, like Princeton Wilson (is it called Wilson anymore?) or Ecole Sciences-Po. You don't think those people are presenting graphs! with numbers! in powerpoint slides? Also, this is a classic: https://www.youtube.com/watch?v=JUvm9UgJBtg&t=2m40s https://www.youtube.com/watch?v=JUvm9UgJBtg&t=2m40s Numbers! It can't be wrong.