> I can't say I notice many single-person mass killings with knives. Where
> do you see this? Yes, you can kill somebody with a knife, but you seem to
acknowledge that it's harder to do.
Of course it's harder. But it happens:
http://en.wikipedia.org/wiki/List_of_rampage_killers:_Oceania
M – Melee weapons, like knives, swords, spears, machetes, axes, clubs, rods, stones, or bare hands