In a lot of games, (like Left 4 Dead 2) movies (28 Days Later) and books (Zombie Survival Guide), the machete is used quite effectively at dismembering foes. But why? The human body is made up of powerful sinews, bone and muscle, how could a machete wielded by a human actually decapitate a foe? It'd take many blow upon blow to separate body parts, yet the machete is seen as some sort of godly killing machine. I know Left 4 Dead 2 isn't exactly going for realism, but in Max Brooke's "Zombie Survival Guide", it is seen as one of the most useful weapons in the entire undead slaying repertoire. Can someone please explain why the common machete has gone from clearing brush to butchering enemies with ease?