The rebuttal is one of the essential martial skill. Most self defense techniques with the help of the refutation, when not using hindaran.
The rebuttal can be divided into two categories, block and block life die. The refutation is alive with the Palm open hand block. While the rebuttal death the refutation by hand was clenched.
Block said life because with open Palms you can extend with a variety of techniques. You can respond with a knife-hand strike. You can respond with a punch or a kick. And most importantly, you can catch your
opponent to the punch/kick then using the technique of slamming, locks, or breaks. So this block live is called
While the rebuttal death was so named because hardly a techniques which can be developed to block it out. When you distracted with his hands clenched, certain that the only answer the technique of punches, kicks. So here is why block out is called.
Refutation lives in General often worn by martial arts meetings. While the block often die by itself used defense Porous (to understand the notion of self-defense and martial arts caused a meeting, read my article first: two Martial Science category).
The purpose of life is to block for easy use of different techniques, whereas the purpose of the rebuttal death was to hurt the opponent's hands/feet are used to attack us. So that the opponent's attack with a member of his body not repeat pain.
So the two categories of block in my opinion. Hopefully understandable and useful for those who love the martial arts.