I am sorry to say that I have had to disable comments on this blog for the time being. Attacks from cyberbullies, serious insults to me and other people, and deliberate time-wasting became too much to deal with, even in the name of freedom of speech. I am sorry not to be able to read the comments and queries of legitimate readers, but I hope that in the near future it will be possible to pass reasonable remarks and filter out the others. When that time comes, I'll be happy to argue over substantive issues when people bring them up.