Watch out for those box cutters!

I cut my thumb today at work. Basically I did it with a fancy box cutter. After watching it continue to bleed despite a butterfly bandage and a certain amount of gauze- I headed for the emergency room. (Worker's Comp will get to pick up the cost for three stitches and a tetanus shot.) I have to admit, I've wondered how much damage one could do with a box cutter. Not that I am looking to do any damage, but they have always seemed less than scary looking. But having now made a good sized slash in my thumb with what is known in the bookstore trade as a "label scraper" I have much more respect for what a box cutter can do.