Denis Chénard, Orléans, Ont.
>"It is a relatively comon phenomenon that scientific types, will dismiss an ancient belief, only to later find there was a reason for it. Normally the scientifc position in such circumstances is to call the thing they don't understand a superstition, or religious observance. "

Very possible, but I would choose "unproven hypothesis" instead of superstition or religious observance.

The thing is, no one seems to question the presenter, all is anecdotal evidence. That's not the way science works.

If natural stones are better, and they produce a better edge while leaving the bevel "frosty", then there should be a scientific explanation as to why this is the case. Anything less doesn't cut the mustard IMHO.

DC