He was absolutely brilliant. He was the master of "gee, that's so simple why didn't I think of that" but he actually thought of it and did it. Case in point, in the first few minutes of the movie they show a shot of what I believe to be a New York Special, where the sheath has the male part of a button snap and the handle has the female part of the button snap embedded into it. Ingenious! I'd love to own one, but having a knife worth more than my car is a little over my line.