Well - Lisa Randall's book arrived two days ago and I have been reading it. I read about two minutes ago - the attempts to combine GR and QM aren't making predictions about the world we see, but a scale BELOW quantum! And I'm like 'I should have picked that up when they keep using Planck scale!' Yet all this time I thought they were having trouble to combine GR and QM to talk about the macroscopic world! IDIOT.