[cogitator]

Water Vapor to unpredictable so they omit it from their equastions.

But that isn't true. It's not omitted AT ALL -- the positive water vapor feedback in GCMs is a fundamental part of them. Were it not for the positive water vapor feedback, it would not be possible to predict global warming above 1-1.5 degrees C for doubled CO2. (And not that the positive water vapor feedback for a long time was a theoretical construct that has only in the past couple of years received observational confirmations.)

[Steve Van Doorn]

"it would not be possible to predict global warming above 1-1.5 degrees C for doubled CO2."

Yes I know that.

The slay of figures has got you cogitator. Its like watching people getting duped by a shell game.