In the past we've had a number of discussions about dealing with an attacker armed with a knife. Many of these discussions are plagued with comments like "never bring a knife to a gun fight" or some other (equally dumb) catch-phrase.
I ran across this video earlier and wanted to share it. While it is obviously a staged demonstration of some kind, I feel that it does a pretty good job of showing the type of attack energy and intensity that will more than likely be present when/if you're ever attacked by a knife. Notice that the attacker covers the distance (looks to be about 6 feet) and stabs the "victim" in less than a second.
Brian@ITC posted a great video a while back in this thread where he showed how fast someone with a knife could attack. I just wanted to throw this one out as well since it shows a continuous attack against an actual person.
Before anyone says "well he didn't even try to move, I'd move laterally (or wherever)" or "I'd use my weak-hand to fend him off while drawing with my dominant hand" consider this. Do you honestly believe that you can deal with that kind of energy or stop that attack with one hand. If you try he's just going to knock your hand out of the way and continue doing the "sewing machine" on your guts. Furthermore, if you simply try to retreat or even, the tactical favorite, "move laterally," he's probably just going to run you over and we're back to the abdominal sewing machine thing.
As a number of people on this board (myself included) have stated many times. We must have empty-hand skills as part of our toolbox. Your pistol will not always be an available option and it may not always be the best option depending on the dynamics of the situation.