I thought you did a great job of using metaphor to explain a dense topic. In fact, my main complaint is that your allusions to human behavior actually confused, or at least got in the way of the explanation...I think the metaphorical part should be less elaborate, because your primary audience is going to be (I'm being solipsistic here) are going to be people like me with a casual interest in physics who still remember the implications of absolute zero at the atomic level...no need to extend the metaphor in a way to appeal to people who think absolute zero is 0 celsius.
Thank you. What I liked about the metaphor is that it fairly accurate. But you may be right about the overuse - it's hard for me to work out the right balance when explaining physics, and I perhaps err on over-explaining. Then again, no one really complains if you make something too easy to understand! :)
I would improve it by defining the relationships between money/happiness and energy/entropy before giving the example. I would have found it a lot easier to read.
