Flying knives and the catching instinct

[not2sharp]

I watch a rare 150 year old antique kard roll along a storage shelf, slip out of its' sheath and then fall perfectly vertically (point down) over my slipper clad foot. I was amazed (and a bit impressed) that a random act could lead to such a precise series of events. As it fell, in what felt as slow motion, I glanced down and remember that my foot seem the size of a swim fin. But, it was only for a moment, by the time it hit the spot I had jump about four feet away.

As for the kard; it had burried its' pointy 10 inch blade about an inch into the cardboard box my foot had been resting on. Fortunately, there was no damage, the cardbord box was full of bubble wrap.

n2s