@pschwede What is proven in the school is simple, that when you surround a hot object with green house gases, that hot object has a much harder time cooling down due to insulation against radiative loss.

The experiment proves that rather clearly. No one has proposed any counter explanation to what is going on.

It seems like your grasping at straws to hold onto a cognitive bias more than someone who is trying to find the most likely truth. Some light at certain spectrums are reflected sure.. so what? we can still measure how much makes it to earth as well as how quickly the earth gives off heat. All of these measurements are pretty damn good at confirming the effects of GH gas really.