Some people should not be allowed to use screwdrivers. Or at least they should be required to undergo a background check, a waiting period and a certified training course before they are allowed to purchase and use a screwdriver.

But not me. I know how to use a screwdriver. I've been installing child safety locks on my kitchen cabinets. I've already done three cabinet doors; it's only taken me a total of two hours; I've only broken the heads off of three screws, leaving the screw tails tragically and irretrievably embedded in the cabinet frame; and I've only drilled two other unnecessary holes. That's three cabinet doors I've finished, only twelve more to go.

Yes, there are some people who should not be allowed to attempt such a project. Fortunately I'm not one of them. On the other hand, I'm not responsible for any accidental firearm deaths.