In another thread 'Entropy, information and Omphalos cosmology' I commented on a strange fact (which I think many are aware of): namely that to which there was an interesting reply: This subject seems to me not to have an immediate bearing on questions of entropy (or Omphalos cosmology, for that matter) and to deserve consideration on its own. Hence this new thread. When it comes to black holes, cosmology becomes quite "above my fireplace", and I can't be of much use. I make only one remark: perhaps it is dangerous to mix symmetries. The metric of a black hole is spherically symmetric, and static; the Robertson-Walker metric of the standard model universe depends on time and is isotropic everywhere. Could this produce strange results like those mentioned above?