I’ve seen some weird technical glitches in my career. One that i will always remember is that a customer was very happy with his new big computer, but could not work for multiple hours on it, because his office would get colder and colder when he kept using it. After some mailing and talking over the phone i suggested a visit to his office where i quickly found the cause of the problem: The big computer fan was aimed directly at the thermostat knob of the radiator, so it assumed the entire office was well heated and closed.