Yes, I did get the point, but I don't believe that you get the Physics. It takes a lot of energy to raise the average temperature of the earth by 4 C - much mo

Yes, I did get the point, but I don't believe that you get the Physics. It takes a lot of energy to raise the average temperature of the earth by 4 C - much more than we are getting from the Sun "within a few days". Stopping (most) of the Sun's light to reach the Earth would be an effective (if not crazy...) way of cooling down the Earth. Adding a huge quantity of greenhouse gases is not going to turn the atmosphere into a one-way trap for radiation. The physics involved in light being blocked by air-borne aerosol particles and that of the trapping of heat by greenhouse gases are different, and their effect, while going in opposite direction, are not the exact inverse one of another.