Some days ago I was watching a youtuvbe video about Goju Ryu "mummy guard" defense aplications. In a comment under it I readed someone saying "it is impossible to block a well placed cross or jab as it retract immediately. you ll have a 0.24 second to react". I commented him/her than in another video I saw Inoue Yoshimi saying in a class seminar that a complete karate move must be done in such amount of time: 0.20 seconds. Complete move incluiding ashi sabaki, stance fixing and arm blocking. The commenter replied that "is imposible" to make a complete karate move with tai sabaki in 0.24.
Then I got some questions I'd be glad if you are pleased to answer, because in my experience I have no accurate answer yet for that, perhaps those of you who are training at higher or more practical level than me could answer.
1) Must/can a complete karate move with ashi sabaki or tai sabaki be done in 0.24 when receiving an attack?
2) If not, can any arm/hand defense move from tiger/mummy guard or any high guard be done between 0.24 or to a "well placed cross or jab" with no tai/ashi sabaki?
3) If not, what it's suppossed to be done against that kinds of attack? Are there some kinds of attack so short and fast that there is no possible defense?