Some years ago, I read a book which was published after
the COBE work (but well before the WMAP results) which
was arguing against the Big Bang theory. Unfortunately,
the name escapes me but there was one point in there that
stuck. Anyway, the point was that to get to our galaxy
distribution in only 14B years would have required density
variations (and hence CMB variation) several orders of magnitude
higher than that seen by COBE. WIthout this higher level of
initial "clumping", it argued, it simply would have taken gravity
much longer to aggregate the large galaxies and clusters that
we see.
Q: have you encountered this argument before and is it a
valid argument? If so, what allows for the "fast" creation
of galaxies given that the density variations of the CMB
is now known to be so low?