making the history of the % of DM+DE versus matter since the BB cosmology tell us something:
The existence of DM & DE and the amount (and now Dark Flow ?) had not been derived from any principle nor predicted.
The initial model of BB disagrees with measured data (now at 96% of darkness versus 4% of matter/light).
Two ways to evade from this conflict.
Get another model or supply a different data set and make a patch to the theory.
A new model is not around the corner. So we are left with the second alternative.
It has been noted that the names "dark matter" and "dark energy" serve mainly as expressions of human ignorance, much like the marking of early maps with "terra incognita."
Recently too there is evidence that there are 10 to 100 times fewer small galaxies than permitted by what the dark matter theory of galaxy formation predicts. There are also a small number of galaxies, like NGC 3379 whose measured orbital velocity of its gas clouds, show that it contains almost no dark matter at all.
see more puzzles at http://www.physicsforums.com/showthread.php?t=276174
wolram and markus introduced to us this very recent article
(Submitted on 28 Nov 2008 (v1), last revised 22 Dec 2008 (this version, v2)
I hope that sometime in future we can discuss a model that fits 100% of matter/light, no more, no less. I do preffer this kind of solution.