On Sun, 15 Feb 2015 10:30:19 -0000, "Brian Gaff"
wrote:

No idea here, I've had sp in this house since the70s and no problems with
isolation. I suppose one might say its proof against idiots, but then
someone always comes up with a better idiot.

There's no such thing as a "Better Idiot". A "more inventive one",
yes but 'better'?, definitely not. :-)
--
J B Good