Why can’t a bullet proof vest protect you from a knife stab?

Question

I mean, it’s designed to stop a bullet which delivers much more force than a human being can ever produce during stabbing

In: 784

Answer 1

Not answering the question but as a bonus point, bullet “proof” vests can sometimes damage you nearly as much as just getting shot. This of course is depending on a lot of factors but basically think of it like this: you have a pistol and you shoot an anatomically correct ballistics dummy wearing a vest. The bullet is stopped by the vest and doesn’t pierce it; however, the force of that impact completely shattered your ribs and made them impale your lungs and other vital organs leaving you not much better off that if the bullet had just cleanly cut through you.