 All right, you wake up in a hotel room. You're sweaty. You stumble over to the thermostat only to find that you cannot lower the temperature. You're not allowed to do it. That's kind of the hotel's way of saying, we're saving money, so you're just going to have to sweat it out. Hotels love automated temperature controls because they don't want you cranking up the AC and running up their bills. Now, if you like to sleep in a frosty room...