pg made a similar comment in Undergraduation (<a href="http://www.paulgraham.com/college.html" rel="nofollow">http://www.paulgraham.com/college.html</a>):<p>&#62; My mother, who has the same [thermostat], diligently spent a day reading the user's manual to learn how to operate hers. She assumed the problem was with her. But I can think to myself "If someone with a PhD in computer science can't understand this thermostat, it must be badly designed."