I abandoned Karate at a young age because the linear physics of the discipline were essentially irrelevant in any environment beset with gravity. Back then, I was really into physics and nobody could convince me otherwise, not even my sensei. If your guard involves keeping your hands at your waist, it’s about as effective as bringing a salad to a barbeque. This theory could be applied to most individual forms of martial arts which specialize in a particular aspect of stand-up or ground fighting. In fact, I can give you five reasons MMA is a more complete system of combat than any one discipline on its own, but this guy disagrees with all of them and wants to school you on why MMA is trolling you.