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?