On 09/12/2015 11:31, Big Les Wade wrote:

But that too is a cherry-picking argument. From the myriad of
predictions made by climatologists in the 60s and 70s (many of which
predicted global *cooling*) you are picking out a few predictions that
turned out to be a reasonable match to what actually happened later, and
saying, "look, those models must be the ones that describe what's
actually going on".

It's true that there was some debate but only a minority of researchers,
even in the early 70s, were predicting cooling. By the end of the
decade, there was pretty much a consensus on warming. Spencer Weart's
"History of Global Warming" is quite a good read on this. I think it's
available in an online version.