TSA -- TSA! -- has decided you can carry a tiny knife (non-locking, non-fixed, 2.3" long by 0.5" wide) on a plane, plus a number of club-like sporting sticks (pool cues, lacrosse and hockey sticks, etc.) and bed-wetters, media figures and stewardesses are horrified. "What weapons are next?" they moan.
Golly gee, I dunno; maybe all those other things people in all the non-plane-travel portions of your day routinely carry, 99.99999% of the time without harming others?
Grow up. Penknives are not weapons in most people's hands -- and the tiny, terrible minority of people who will initiate force are just as deadly with a pen or pencil, a knitting needle or a flattened, bent and torn soft-drink can; you know, the kind of aluminum can you hand them on most flights?
T. R. MCELROY'S STREAMLINED TELEGRAPH KEYS
7 months ago