In praise of Roger Penrose

Roger Penrose has been awarded a share in the Nobel Prize for physics and I could not be more pleased.

It is not that I have met him or even attended a lecture by him and nor do we even see him much on TV – but I owe him a debt for his insight and also for his ability to educate and inform.

A few years ago I bought his “Fashion, Faith and Fantasy” – his stern critique of what he sees as the fashion of string theory and assorted similar ideas. I’m not going to pretend it’s an easy book, and much of it was well over my head – but it is still choc-full of insight. From it I went back to an older copy of “Cycles of Time”. This is a shorter book and was much more heavily marketed as for the “lay reader” but, actually, I found much of it much harder to get to grips with – if you don’t really understand conformal geometry (and I didn’t) it’s pretty hard to follow. But, and this is a big but, it has an absolutely brilliant explanation of entropy in its opening chapters and if, like me, you never really got to grips with this subject (because, I maintain, it was so poorly explained) as an undergraduate, this really cuts through the fog.

It mattered to me because its discussion of phase spaces gave me an insight into the stochastic nature of memory management systems and the way in which entropy can help us explain latency in computer systems. I wrote quite a bit about that in my PhD thesis and I am convinced it’s a subject that would repay a lot more investigation. Sir Roger collected an additional citation for that (not that he needed it of course).

Only last night I again made an attempt on the massive “The Road to Reality” – previously I’ve never managed to get past the introductory discussion of non-Euclidean geometry in chapter two, but I feel a bit more confident about that now, so giving it another go.