My Great Grandfather kept a dished out, super coarse whetstone beside his chair on which he sharpened his knives (AKA improved their dullness). Bless his soul, they really couldn't cut anything. Unfortunately (or fortunately - my GREAT grandfather), he first taught me how to sharpen when I was five or so. To test if one of his knives was sharp, he would hold the knife in his hand, edge pointed directly toward his thumb, and gently press his thumb into the blade. I don't to this day know what he was feeling for, but that's how he did it. He never cut himself with his knives.
By the time I was 11/12, I had learned what real sharpening was and how to accomplish it. My dad bought me a set of small Arkansas stones; soft, hard, and black. I would sit in front of the TV and sharpen away. At that time I didn't know much about what angles would do what (my edge wasn't very durable), but , well, my knife was sharp.
Having learned this new skill, I went to show off to my Great Grandfather. I couldn't say "STOP!" before he "checked" the edge. Cut him to the bone - right thumb. I still feel bad.
I have greatly improved my sharpening abilities since, and before I even agree to let someone hold one of my blades, I tell them, "It is sharp . . . really, be careful." Most folks just don't know what a truly sharp blade is, or are not used to a pocket knife being that sharp.
When I worked on my Aunt's ranch one summer(17 yrs old), we were tagging cattle (ear tags). The vet had used his knife at lunch to cut an apple and left it at the ranch office (nasty vet - been using it all morning to cut the back button off old ear tags). Requesting a loner instead of walking 100 yards to get his, I handed him mine with my aforementioned warning. I got a lecture on the schooling veterinarians went through and a treatise (alsmost as long as this posting) on his proficiency with a scalpel and my arrogance pertaining to the sharpness of my blade. He then proceeded to slice the ear of the heifer he was working on from the base to the tip - and - to slice off the tip of his thumb (about an 1/8 inch hunk). He dropped my knife (Bastard!) and told me there was no reason to have a knife that sharp. My reply to him and everyone else who has not heeded my warning . . . "There's no reason not to be careful with a knife."
I know we still feel bad, but it's not our fault when someone cuts themselves with "our" knives just because we purchase good steel and know how to sharpen it. After all, what's the point in a dull knife?
BTW - didn't heed my own warning and cut MY thumb yesterday while carving the turkey - not badly, but it's always the worst spot that get's cut, ain't it?
cinteal