Isn't that just a bit too glibly dismissive, Graham? Surely if something is martially valid, this can be demonstrated, no? It's a copout to say, "Oh, you're just ignorant" -- if something is martially valid, can't that be demonstrated?
Of course it can Mary. If a person can't see that something is then they are in for a nasty shock wouldn't you say?
People may always ask for proof, go on prove it! You may end up as some kind of puppet show.
So no it's not a cop out it's an abrupt statement.