The physicist Leo Szilard once announced to his friend Hans Bethe that he was thinking of keeping a diary: 'I don't intend to publish. I am merely going to record the facts for the information of God.' ''Don't you think God knows the facts?" Bethe asked. 'Yes,' said Szilard. 'He knows the facts, but He does not know this version of the facts.' - Hans Christian von Baeyer, Taming the Atom.

To Meghan and Chris. Welcome.

No matter how hard you try you will never be able to grasp just how tiny, how spatially unassuming, is a proton.

And that, almost certainly, will require a good deal more than lucky breaks.