On Thu, 13 Aug 2009 11:58:13 +0100, Dave Osborne wrote:

Sorry about the long post.

Not at all! Thank you - that's the clearest explanation that I've ever
seen; also shows that some sources can't be trusted, which in itself is
useful.
--
Peter.
The head of a pin will hold more angels if
it's been flattened with an angel-grinder.