real life wrote:So, does the 2nd Law apply to any known closed system in the universe, or are you (as ros has previously) implying that the 2nd Law only has theoretical application, not a practical one?
For the record, I never implied or stated that the SLT only has theoretical application. That's just RL misrepresenting me again (which happens so often that it can not be an accident).
The SLT, like most physical laws, applies to everything and has real world application even though the theory itself uses pure (theoretically pristine) conditions as the basis for the formula.
Even high schools students are familiar with using physical laws to calculate acceleration of a falling object, without taking into account air density and temperature gradients and wind currents and all kinds of other non-pristine conditions which apply in reality, but are simply not part of the pure gravitational equation.
Just because F=MA doesn't have a term for friction, doesn't mean that the whole formula is incorrect, or doesn't have any application in the real world. Likewise, the SLT is just as valid as a functional theory even if virtual particles and vacuum fluctuations can affect even the most pristine imaginable space.
Besides, none of this matters because we know that the Earth gets plenty of energy from the Sun to drive evolution above and beyond entropy at the local level.
If RL wants to discuss why the Universe as a whole evolves complex structures and if that violates SLT at a cosmological scale, then we have a different discussion, unrelated to biological evolution.