This is an appraisal of current (11/3/2016) popular opinion on global warming.
Global warming is defined as the rise in average global temperature.
I'm a bit irked because opinions--popular or not--don't matter in science, but the bigger problem is that "average global temperature" is a rather absurd concept, hence my choice of C on the first one. A temperature is a local intensive property defined as the average kinetic energy of a given substance or parcel of atmosphere. Treating the average kinetic energy in a given parcel of atmosphere of two very different locations as components of a single system which can then be averaged and provide any useful information is downright silly.
Tracking changes of this average average kinetic energy and then acting as though they are the
cause of various events rather than
effects of those events is more silly, before you get around to treating the average energy input as the actual energy input, and start acting like it is surprising when this produces absurd results which need explanation.
Tying that entire average average kinetic energy system with average energy input to a single controlling factor which involves a
high gain positive feedback effect and claiming it is plausible because you can tune a GCM to replicate past average average kinetic energy fluctuations decently with these assumptions (and various others) is a whole new level of silliness.
Trying to enact global sociopolitical and economic shifts on the basis of this silliness, well, you get the idea.
Right/Left political affiliations generally line up pretty well on this subject, but I'm pretty far over in anarchist/socialist land, my political positions don't matter scientifically, and my understanding of science is that it works best when politics is kept out entirely. Not a popular set of positions here though so I'll drop this in a spoiler to avoid the thread turning into a shitfest, as I've long since lost the energy to argue about this that I had years ago.
If anyone does wish to correct me or whatnot, for the sake of the thread purpose, please place it in a spoiler or a PM.