While running a simulated annealing program, lowering the simulated temperature too slowly will make the CPU temperature rise too much. That’s thermodynamics.
The other lesson in here, particularly for systems engineers, is: “The system always kicks back”. (Paraphrased from John Gall’s satirical takedown of systems-thinking in his three Systemantics books, which are a little over the top but nevertheless recommended).
I’m currently reading through Sustainable Energy – without the hot air by David J.C. MacKay, FRS, which I recommend to anyone interested in energy or energy policy. I’m particularly impressed by the graphs and diagrams in the book, both for the laboriously-collected data they represent and for their power to convey important points quickly and clearly. (Example).
The visual imagery evoked by the prose is powerful too: in a section discussing the merits (and lack thereof) of having a large number of people make a small saving each, here is what MacKay has to say:
The “if-everyone” multiplying machine is a bad thing because it deflects people’s attention towards 25 million minnows instead of 25 million sharks. The mantra “Little changes can make a big difference” is bunkum, when applied to climate change and power. [link]
Citation: David J.C. MacKay. Sustainable Energy – without the hot air. UIT Cambridge, 2008. ISBN 978-0-9544529-3-3. Available free online from www.withouthotair.com.