Ask Ethan: Does dark energy mean we’re losing information about the Universe?
Ethan Siegel

As far as we (and Eddington), can tell, both Black Hole evaporation and Universe expansion processes must conform to the 2nd law of thermodynamics.

“The law that entropy always increases holds, I think, the supreme position among the laws of Nature. If someone points out to you that your pet theory of the universe is in disagreement with Maxwell’s equations — then so much the worse for Maxwell’s equations. If it is found to be contradicted by observation — well, these experimentalists do bungle things sometimes. But if your theory is found to be against the second law of thermodynamics I can give you no hope; there is nothing for it but to collapse in deepest humiliation.”
— Sir Arthur Stanley Eddington, The Nature of the Physical World (1927)
So if the Universe is actually in fact an open system, as Lee Smolin suggests and Plato intuited — does this suggest a #CosmoGaia scenario?
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