Thanks for the info Mike. Lord Rees' comments are often very thought provoking.

"...it could be there are aspects of reality that are beyond the capacity of our brains.”

Most likely true, I think, but it's beautifully humble, coming from one of the best minds on the planet.

Off topic, but I'll take the opportunity to mention this downloadable 11 page PDF file:

Lord Rees: The world in 2050

http://www.21school.ox.ac.uk/downloads/events/LordReesSpeech.pdf

"Time is what prevents everything from happening at once" - John Wheeler