Anybody who believed global warming was man made are having questions now?

[Sqrl]

Mr Khan said:

And no, the harsh winters are actually a sign of climate change, and not the proof against it. Hell, if Greenland melts into the North Atlantic, Europe and North America are in for a deep freeze.

I know this is being bantied about by a lot of AGW proponents as of late but I don't really see why you're buying into it.

Frankly a basic background of science should lead most people to reject the notion that a harsh winter has any bearing on the debate.  With the past claims that mild winters have been the result of AGW and now the new claim that harsh winters are the result of AGW we certainly have an issue.

As Karl Popper wrote of the scientific method:

"In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality."

If mild and harsh winters prove the theory while moderate winters are inconclusive, then where is the room for falsifiability of this theory of winter as a test for AGW?  The answer is of course that there is no room in this theory for refutability and thus the only logical conclusion is that the theory of winter's severity as a metric for AGW is not science, but rather speculation at best.