this techmique us used in the open hand not so far as to create any more damage or any more painful effect, but used make a transition to a , whats called a jurk hand, or jut sao in wing chun, if blocked, which the practitioner in this art is waiting for, from contact reflexes called chi sao , or sticky hands. he will then make the contact they are looking for. also called asking hand. can also be used as a neck grabbing hand to immobalize ones head pulling it into a punch or crushing elbow. after all, what will hit harder, a semi going 50 mph smashing into a brick wall or a semi colliding with another semi going the same speed?