So reading back through many of the answers it seems like
Slurry Dulling is pretty much a Coticule thing
There is a bit of conjecture about dulling vs limiting
The idea of Particles actually "Bashing" into the Fin and dulling it is not widely accepted not disproved just not all that easily accepted
The idea of the slurry limiting how far the edge can go then Diluting/Breaking down the slurry and the edge getting sharper is more accepted..
The definition of "Sharper" is a bit vague :)
It seems that some want to believe it so much that they would do some pretty strange honing techniques to try and prove it.. Pretty much akin to taking and edge to 10k then slamming it down to 1k just to say "Look I dulled it"
Some really detailed thinking in this thread I am enjoying the reads so far :tu