>>13507086>>13507202>>13507236I have another hypothesis, anon, and there could be many, but I'll say one.
Scientists with PhDs have their pet theories and their hubris. Notice the graph does not change much throughout for them. This to me could be showing that PhD types are more stubborn than the other groups and "made up their mind". As they have PhDs, a higher number of them will not listen to higher sources because to themselves, they are the source.
Furthermore, and QUITE IMPORTANTLY, this education division does not take into account what degree they have.