I occasionally hear or read that computer modelling has “proved” something about Anthropogenic Global warming (AGW) or that computer models provide “evidence” of warming.
This is impossible. I have worked with computers for 40 years at all levels of programming.
I understand how they work and what they can, and can’t do.
It is best to think of a computer as a very literal, and obedient clerk. The computer will do exactly what you tell it regardless of whether it makes sense. For example, if you enter topographic information into a computer and program it to redraw the map of the world if the sea level were to rise, say, 50 miles, it will produce wonderful pictures of a globe of water. The “computer” will not, and can not, ask if it is true. And, it certainly can not care.
Even with the best of intentions, a computer model is a set of calculations based on a set of assumptions. This is not evidence of, or proof of, anything.