Fine, let's go w/ that.
The sun sends the earth 4.1x10^13 kcal of energy per year (from
the U.S. Dept. of Energy: 173,000TWatts) and the earth has a mass of 6 x 10^24 kg. -ok, make it just 5 x 10^24 for the specific heat. That rate of heat will take over a hundred billion years for the earth to heat up just one degree heat.
Look, this isn't rocket science. In middle school they teach you that a calorie will heat a gram of water 1C and that it would take a hundred billion years for a calorie to heat up a hundred billion grams.
AGW is like astrology and clairvoyance, we're better off w/ science.