It was confirmed in the last two years when I purchased two different knife sharpening systems. My entire childhood I witnessed my father's fascination with knife sharpeners. He had an obsession with sharp knives. Or at least it seemed like an obsession. Looking back I don't think it was an obsession but more of a continual need. Because for all of his attempts to sharpen knives none of them were ever sharp. But they changed shape quite often. He had various hones of undetermined grit were dished so deeply that it would require a full week of flattening on a DMT. He would have been envious of the edges I now put on knives. It just took two generations to get there.