I have been deluged by an email from my colleague Dr P. G. of Englefield Green, containing this link, and a cover note as follows: ‘I can think of nothing to say about this’. I probably could say something about it, if only I could find the write right words. Even were I able to find the right words, I rather think that I should rein them in. After all, as the man said, whereof one cannot speak, therefore one should be silent. Oh yes, there’s brevity. That too.