I think the confusion may arise from this concept of ‘entropy density’?
To compare density levels, we need to look at a specific volume or amount of matter (recall the units of entropy are energy over temperature, no reference to space or mass). In this closed system the 2nd law tells us that overall entropy only goes up, but it does not help us to differentiate between different areas of density. It also tells us that, overall, the density will increase over time, which is not intuitive.
Considering open systems makes things easier. Energy and matter can flow in and out. You can still sample your ‘entropy density’ in defined volumes, and you may indeed find that ‘life has increased entropy locally’. But, through thermodynamic coupling, a greater amount of entropy has been exported to the environment. This coupling is the ‘life engines’ Dimitry and jessicata refer to.
In summary, the ‘entropy density’ concept needs to be considered carefully in local vs. global terms.
I think you’re flogging a dead horse with this line of questioning. Or perhaps its the teleological language you choose to employ. There are a bunch of good replies. What is it you actually want to know? To get better answers you need to ask better questions.
I think the confusion may arise from this concept of ‘entropy density’?
To compare density levels, we need to look at a specific volume or amount of matter (recall the units of entropy are energy over temperature, no reference to space or mass). In this closed system the 2nd law tells us that overall entropy only goes up, but it does not help us to differentiate between different areas of density. It also tells us that, overall, the density will increase over time, which is not intuitive.
Considering open systems makes things easier. Energy and matter can flow in and out. You can still sample your ‘entropy density’ in defined volumes, and you may indeed find that ‘life has increased entropy locally’. But, through thermodynamic coupling, a greater amount of entropy has been exported to the environment. This coupling is the ‘life engines’ Dimitry and jessicata refer to.
In summary, the ‘entropy density’ concept needs to be considered carefully in local vs. global terms.
If you were to analyze which places life increases entropy and which places life decreases entropy, what would you decomposition look like?
I think you’re flogging a dead horse with this line of questioning. Or perhaps its the teleological language you choose to employ. There are a bunch of good replies. What is it you actually want to know? To get better answers you need to ask better questions.