I fail to see just how having spent one's career writing computer programs bestows someone an in-depth understanding of climate science...?
But what is abundantly clear is that folks like being told what they want to hear: AGW threatens the future occurrence of super-severe European winters and, above all else, that particular holy grail must forever remain untarnished.
Then again, deniers always want 'proof' -'proof' that in fifty years' time, X, Y or Z will happen...Science doesn't work that way. Though clairvoyance might??
PS: I once spent years learning calculus, but it never made me an expert in Brane Theory!