Note, in this context, the way in which the man-made global warming alarmists declare that only certified "climatologists" have any authority to speak on the subject, dismissing the legions of skeptics from fields like geology or physics. On a practical level, you can see how this helps preserve the monopoly of the establishment. A relatively small group of academics at a fixed number of universities and research institutes, all supported by the same government agencies with the same agendas, get to decide who joins the closed club of "climatology." Whereas if you have to bring in the geologists and the physicists and the astronomers, they have all come up through independent institutions with sources of funding that tend to be more varied and less political.