Why all these prejudices against a constant? ("dark energy" is a fake probem) ==sample quote== It is especially wrong to talk about a mysterious “substance” to denote dark energy. The expression “substance” is inappropriate and misleading. It is like saying that the centrifugal force that pushes out from a merry-go-round is the “eﬀect of a mysterious substance”. ==endquote== http://arxiv.org/abs/1002.3966 Why all these prejudices against a constant? Eugenio Bianchi, Carlo Rovelli 9 pages, 4 figures (Submitted on 21 Feb 2010) "The expansion of the observed universe appears to be accelerating. A simple explanation of this phenomenon is provided by the non-vanishing of the cosmological constant in the Einstein equations. Arguments are commonly presented to the effect that this simple explanation is not viable or not sufficient, and therefore we are facing the 'great mystery' of the 'nature of a dark energy'. We argue that these arguments are unconvincing, or ill-founded."