Long pointy kitchen knives are a vestigial remnant of pre-fork eating habits. Also, they're dangerous, and British doctors are calling for a ban.... yeah, on long, pointy kitchen knives. Needless to say, the gun rights activists will cite this as the next step on the gun control slippery slope [update: I'm too late]. They're wrong: it's entirely possible that the US could follow suit, in practical if not legal terms, without every modifying our toxic gun culture one whit. Think lawsuits: now that the idea that knives could be made safer is out there, every knife wound is a product liability lawsuit waiting to happen. I give it three years, on the outside, unless the knife lobby (do you think they have one yet, or will they have to get one? If they have one, it's probably mostly about steel imports and patents) manages to piggyback a liability shield the way gun and asbestos manufacturers have done. I also think that the first "safe knives" will be on the market somewhere in the world within two years, possibly sooner if the Japanese get hold of the idea.
[update: Via Volokh.com: US Knife Laws. I'll have to go through them later and see what they say]