On Thu, 28 Aug 2014 00:12:41 +0100, "J. P. Gilliver (John)"
wrote:

In message , Gene Wirchenko
writes:
[]
Or Dick may be the real expert and gets all of the really tough
jobs.
[]
Yes; that's why comparing hospitals (or doctors) on survival rates is
such a silly thing to do. (But sadly plenty of people seem to do it.)

No, but one has to do the next step and find out why the
difference. Knowing that there is a difference is not enough.

Sincerely,

Gene Wirchenko