The Global Warming Cult insists that their computer models prove that humans are causing global warming. In point of fact a computer model doesn't prove anything. It can validate or disprove the assumptions of the model at best.
Programmers call it GIGO. Garbage in, garbage out. If you feed a load of bovine excrement into a computer, what comes out is just as aromatic.
In the case of the Global Warming Cult, comments within the actual source code for their much vaunted computer models, it is clear that the code was being ALTERED to force the results to be in accord with the outcome desired (and paid for) by the promoters of a one-world government.