just read the first post....

my answer is think of rubber bands...pass your dull head through it and it will just move the rubber bands outta the way....do it with a sharp head and it will slice them easily...


think of blood vessels and all that good stuff the same way....rather than cut through them with a dull head, it will likely pass by them....

same with tissue damage...a sharp head is going to cut MORE of the heart and lung tissue than the dull one that kinda just punches through....