[kbenson]

From what I got out of it, they were talking about smaller timescales, on the order of a couple centuries. The 1400 years was a sort of upper limit (our planet consumes as much energy as the sun, hotter than the sun). 400 years was where the atmosphere reaches the boiling point. Those of course are the steady 2%-3% increase numbers though, and assume there's actually enough energy to reach those states, which there probably isn't.