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The universe is a closed system, at least last time I checked. ;)

Peak oil is not an energy crisis. It is a liquid fuel crisis.
by Starvid (arvid.hallen at gmail.com) on Thu Nov 26th, 2009 at 09:15:14 AM EST
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Is it?
by Colman (colman at eurotrib.com) on Thu Nov 26th, 2009 at 09:16:11 AM EST
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  1. we live on Earth and will for the foreseeable future - that is finite, but an open system
  2. the universe may not be finite - in fact, the most recent consensus is that it isn't, in which case again the space within out cosmological horizon may be bounded but the cosmological horizon would be the boundary of an open system


En un viejo país ineficiente, algo así como España entre dos guerras civiles, poseer una casa y poca hacienda y memoria ninguna. -- Gil de Biedma
by Migeru (migeru at eurotrib dot com) on Thu Nov 26th, 2009 at 09:18:28 AM EST
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