I wonder if the people who programmed the specialised computer software had previous experience with climate modeling?
Also, how do they know that the magnetometry technique is accurate? Because the manufacturer says so?
Because it works.
Have you even taken the case off a home computer, much less written a line of code? Better to scribble on a bathroom wall than post here. Have you ever done a picture puzzle? A computer can do it too, just a lot faster. It has nothing to do with climate change or warranties.