Global Warming

Experiment to test global warming theory:

Scientist 1: Ok, we need to test global warming. What are our variables?
Scientist 2: Oh, that would be everything on the entire earth and everyone on the entire earth and everything that happens every second of every day on the entire earth. So, basically, the entire earth. Over a time period of, oh let's say 20,000 years ago to the present.
Scientist 1: So... firing up my copy of "The Sims" and leaving the stove on in their house probably won't get the job done eh?

Do we really have computer models that can basically account for the variable "everything and everyone on the face of the earth every second for the last 20,000+ years"?? Or, is it just "there are more humans now than before, the earth is warmer now than before, therefore humans are making the earth warm?" I'm open to the "theory" of "global warming" and don't doubt objective climate data, but remain skeptical that scientists can point to John Smith SUV owner and say, "This guy is producing .000000000000000000000000000000000000000000001% of greenhouse gases and needs to get 5mpg more from his SUV or else the world's temperature will go up by .0000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000 0000000000000000000000000000000001 degrees.

I heard about an interesting text on this subject the other day. I don't know if it's good but I like cover. http://www.amazon.com/exec/obidos/AS...juniorbooks-20

Jam it back in, in the dark.