For all practical purposes "quantum foam" is still closer to "nothing".
This thread may be relevant...on Asimov's Relativity of Wrong:
Thread
Isaac Asimov's Essay "The Relativity of Wrong" (Including Criticism of Socrates And Considering Proper Standards of Correctness)
Today a friend referred me to an essay by Isaac Asimov entitled "The Relativity of Wrong" with which I was not previously familiar. It contains of Socrates which seems right in line with the Epicurean perspective. Even more than that, it contains an analysis of what it means to be "right" or "wrong" that I think is probably also very consistent with Epicurus' perspective. Here's a good summary of the point from Wikipedia ("In the title essay, Asimov argues that there exist degrees of…
Cassius