It’s cold outside, about ten degrees. You start taking a shower, the water is warm and you feel relaxed. A few seconds later, after the point of no return, the hot water starts slipping away over your skin to your toes and then to the drain. You turn the faucet completely to “hot” while the water becomes colder and colder. You look at it with the word “mercy” written in your eyes but the faucet replies back to you with the only word it knows…