just imagine there is a deep lake so deep there is no sound but there is scary, silence sounds there you should be like that so, if something drops in the lake immediately that lakes surface will respond to it this lake has no intention to do something already until, something happens for example you lift, opponent is smashing he has got the match point you are ready for opponent smash if you are just calm, wait opponent smash, then you will be able to respond best possible way you have best chance to return opponent smash in best possible way but, most of the players when they lift just before the opponent smash they are ready like that or they are ready like that why? 