On Wed, 17 Apr 2013 02:29:53 +0000 (UTC),
someone holding a knife, you might be able to stay out of their reach
or at the very least, have a much better chance of fighting them off.

Especially if YOU have a gun!

Yeah, well, I knew someone was going to say that. And if I knew
everyone out there had a gun, then I'd probably be carrying an Uzi.
There really isn't any end to out arming someone who might be carrying
a weapon that can hurt you.