Cycles of Time: An Extraordinary New View of the Universe

by Roger Penrose

It seems to me to be much more plausible that the information contained in all processes whose future evolution is directed into such a space-time singularity is accordingly destroyed. However, there is an alternative suggestion,[3.49] frequently argued for, that somehow the information has been ‘leaking out’ for a long time previously, encoded in what are referred to as ‘quantum entanglements’, that would be expressed in subtle correlations in the Hawking radiation coming from the hole. On this view, the Hawking radiation would not be exactly ‘thermal’ (or ‘random’), but the full information that would seem to have been irretrievably lost in the singularity is somehow taken fully into account (repeated?) outside the hole. Again I have my severe doubts about any such suggestions. It would seem that, according to proposals of this kind, whatever information finds its way to the vicinity of the singularity, must somehow be ‘repeated’ or ‘copied’ as this external entanglement information, which would in itself violate basic quantum principles.