Science data shows the earth has been both warmer and cooler, than the present. This has occurred many times during earth history, most of which occurred before humans were on earth. On the other hand, Global warming, using human intervention, has no precedent beyond the present data. Over 99% of the precedent of global warming is based on natural happenings without human intervention. What data is favored; 1%?
Even if you assume, for the sake of argument, this current cycle of warming is due to exclusively to man, one data point/cycle does not allow one to draw an accurate extrapolation curve. Rather one point allows one to draw any curve you like. This is why the poles are still ice even though most of the early consensus curves said melted by now. There is no second precedent point, to make this more reliable.
Take a piece of paper and draw one point on the paper, and then draw your best curve through it. Now make 1000 copies of the single point, and have 1000 people draw their best curve, to see what happens. Any curve and claim will fit that one point. If we had two points, and did the same thing, the curves get closer.
Extrapolation curves of unprecedented occurrences, are subjective, due to one fuzzy data point. Even if the fuzzy data comes to a focus (have a good explanation for this unique occurrence), one point is not enough for a reliable extrapolation curve. The older data about the earth doing this, is populated with hundreds of precedent points, yet this is not seen as reliable for extrapolation.
Name me one other area of science where a curve, drawn through one unprecedented data point or occurrence, becomes an automatic dogma? This is not normal in science. I can't think of any other case. On the other hand, this is quite normal in politics. For example, one bad thing; even subjective, can end a political career. One previously unprecedented point of mishap; a racial slur slip, can be manipulated; using a one point subjective curve, so people begin to ignore the preponderance of the data, which was many years of good service; old climate data. Conceptually, one precedent point becoming dogma; top of the data pyramid, is common in politics, but uncommon in science.
Name me any place in science where one occurrence of an unprecedented occurrence is give the status of a dogma and then gets huge resources so the status of the dogma is given the expected fluff? If we saw one star, in the milky way galaxy, explode into the face of President Obama, would any consensus speculation be given instant science dogma status? Would this be enough to invest billions in research. This is not normal, except in politics, where one jolt of positive or negative public opinion is invested in heavily to tap into the wave.