Rom: Regarding dark energy (and dark matter for that matter, also the flatness of the universe in general ... I am agnostic. But I must admit I have a certain predilection for a perfectly flat universe ... in that it conserves the first law of thermodynamics on a cosmic scale. > > > > David: Fair enough. I agree. Everything points to flat. > > Rom: And this is in accord with a zero energy universe.-But a sum of zero. Plus and minus balances out. But all of this is not nothing.