You sound really scientific, so let me ask you a question.
Fortunately our climate has left enough of a history that it has allowed man to study the climate conditions in some detail for a long time period.
Every one agrees that the climate is always changing.
Presently changes have been observed that are outside the norm of observed change.
The one variable that is present since the changes began is the burning of large amounts of coal and oil.
Why would you not think that the burning of oil and coal is the reason for the changes being observed? That is the one thing that has not been done before. Ever. Therefore there is no history of this being done to study. We don't know what the results will be. But trends indicate the changes won't be for the better.
Hey.. You were rolling along just swell there until you got to the "outside of the norm" comment on historical observations. These "proxy studies" based on tree rings, and mud bugs and ice cores can only tell us so much.
In one survey of Climate scientists, their biggest beef with their field was some of the leaps to conclusions about HOW accurate and COMPLETE those studies are. An individual study like say, Ocean bottom off of Fiji using ONE Proxy can be quite revealing. But when you try to compare the ENTIRE SURFACE of the earth a 1000 or 10,000 yrs ago to our MODERN satellite derived temperature anomalies, you have to use ALL available proxies and trouble ensues.
To make a long story shorter -- the TIME RESOLUTIONS of those GLOBAL proxy studies are in 100s of years.
Our little 70 or 100 yr spike would hardly show. So the point is -- NOBODY should claiming anything about GLOBAL rates of change or absolute temperatures. We can write a GENERAL story about historical Global temperature, but finding 0.5degC over the ENTIRE globe for 6900BC is sketchy territory..
So you want this to be as simple as blaming oil?? OK -- you sequester the crap out of CO2 emissions and you STILL have pollution dontcha? Mans total yearly emissions are 1/20 of the natural CO2 cycle.. And 1/3 of the emissions charged to man comes from farming and land use.
It really is a matter of agreeing that CO2 probably is PART of observed warming, but the Climate System is still largely unexplored and needs to shed some of the agenda driven hype. If you don't like fossil fuels -- let's work on that WITHOUT twisting the science into spin and propaganda for public consumption...