bumble wrote:I don't know much about this, but I thought I'd bring it up. I was thinking that the open system part is the important piece when it comes to our planet and our ability to have speciation (sp?)/species generation and evolution. (Oops, I mean, "Thanks, Brahma/Flying Spaghetti Monster/Jehovah/Ra!")
What about the idea that disorder can actually decrease when you're having an influx of energy into a system, even though the rest of the Universe is still experiencing an increase in disorder?
Good question... I think! The fact that ever single action involves an overall increase in entropy still holds. I'd be careful framing it in terms of energy moving from one area to another, as it is a different thing, I think. Usually, I would associate energy flowing into an area with an increase in entropy in the receiving area (say heat applied to ice).
On earth we've had order build up over many years. I mean, the sun's going to burn out eventually, anyway, so entropy is going to win in the end. But until then, I think we've had negative entropy of a sort because we've fed off of the energy from the sun.
If there is a way of measuring the earth's entropy as a closed system, I would be pretty sure it would show an increase since the bulk of the constituent elements were thrown out and glued together. To use an obscenely crude example, if you think about the
decrease in order from carbon in a natural elemental form (graphite or diamond) and to the myriad of different combinations it is found in now, I think the direction in this system (earth) is clear.
I just think that given that every one of the unimaginable number of microscopic reactions that have brought us from state:lump of carbon to state:human/plant etc must be accompanied by an increase in entropy, the overall change for the planet alone must be towards disorder.
But I would be very happy for someone to jump in and say otherwise. As I've said elsewhere, I was a poor student. I haven't thought much about the entropic effect of all the heat radiating off the planet and dissipate into space and vacuum.