What Martial Arts Have to Do With Atheism - Graeme Wood - The Atlantic:
The reality of a knife attack is that even if you stop 50% of the thrusts and slashes, you will be taking damage with every other move. And getting cut with a knife of any size is physiologically horrible in a way that few people realize. It is arguably worse than getting shot. A bullet is a tiny ball of metal that may or may not hit something vital. Unless you're shooting someone in the brainstem or heart, you're basically waiting for blood loss to incapacitate him. A knife--especially in the hands of someone who knows how to use it--cuts through everything it touches, and it's not going to malfunction or run out of bullets. It is also much harder to wrestle a blade out of a person's hand, because you can grab a gun without getting your fingers cut off.