Oh yes! We measure a glassfull per person. I was working in a nursing home, as a cleaner. As they'd tell me , 'only a cleaner'. At tea break once there were two of us waiting for the electric kettle to boil. It began to bubble. As it was the nurse who'd put it on I waited a bit, then couldnt resist and turned it off. The nurse was furious! She turned it in again, and let it boil until the thermostat clicked it off. Seemed like forever. Seems we're programmed to do things, and dont think about why. The thermostats need to be more reactive, as we aren't.