totally agree....I don't consider myself to be an expert.
I don't think anyone referred to themselves an expert.
I don't believe for a minute that i need to be an expert.
Who decides this expert status?
Is a used car salesman that's sold over 50,000 cars, or someone that's driven 75 different cars by default an automotive 'expert'?
That's a rhetorical question. No need to respond.
What I've read so far - not every stone is 'tested' some are assumed to be good.
They are assumed to be good because similar stones were good.
And;
So far - no one outside of this forum has told me super-hard stones are for experts only.
And that's after lengthy discussions with people that have decades of Jnat use under their belts.
someone told me once that shaving with a straight was "too hard" ....