Assumptions

The climate-weenies are full of gloom and doom because their Global Climate Models (GCM) show the earth warming at an horrific rate.  The problem is that the model doesn't match the observations.

Climate models show twice as much warming during the 21st Century than what’s actually been observed, according to a new report highlighting the limitations of global climate models, or GCMs.

That's not a problem, just divide your prediction by two.Obviously, the global climate model has a bad assumption, but it can be corrected by a simple halving.  Of course, that's impossible, as Stephen Green reminds us.

Reality must be made to better conform to the models, which are of course correct.

Heh!