All this talk about energy conservation has got me thinking about Perpetual Motion Machines, there are 2 types, both are impossible but one is more impossible than the other. One type would violate the known laws of physics, or maybe not; it seems to me that in an accelerating universe it would be possible, at least in theory, to extract work (force over a distance) from nothing and keep doing so forever.
The other type of Perpetual Motion Machine would violate the second law of thermodynamics, you couldn't create energy from nothing but you could keep recycling the same energy and keep extracting work out of it forever. That would violate not just a law of physics but a law of logic too. If you could do that then you could also make entropy decrease, but that would be illogical because there is no getting around the fact that there are just more ways something can be disorganized than organized. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv2TGSjszwavfygMdKsqswq263PNvBKCS8b0ujeP-UZMLw%40mail.gmail.com.
