Reference: Argentinian glacier defies global warming, Bangkok Post, July 8, 2009
A climate change scientist evaluates the rapid advance of a glacier in Argentina as follows: "We are not sure why this happens. But not all glaciers respond equally to climate change" (Argentinian glacier defies global warming, Bangkok Post, July 8, 2009). In other words, they don't take data to test the hypothesis because their hypothesis is deemed correct by definition. They take data to test the data. If the data support their theory the data are deemed to be good. Otherwise the data are deemed spurious and additional theories are needed to explain how these observations could occur in the age of global warming. In this kind of science, the man-made global warming hypothesis cannot be proven wrong no matter what the data.