See, you don't know any more about martial arts than you do about pool.
The so-called "one inch punch" relies on power that comes from the feet to the knuckles is a tightly controlled and timed manner. The wrist is a tiny player in the punch. No different from Joe Louis throwing his devastating short hooks 80 years ago, or Tyson in the modern era (only in the case of Louis and Tyson we actually get to see a man collapse in a heap after getting hit with a punch that seemed to come from just inches away).
Here's the difference. A fighter can transfer a lot of his mass into that punch because the dwell time is remarkable longer. The impulse from a moving cue lasts about a thousandth of a second and then the ball is gone... way before it can "feel" the effect of the player's hand, let alone his entire body.
You need to increase the velocity of the cue before impact. Adding any sort of motion at the instant before contact will not increase the velocity of the cue in any measurable way, so it will not add any power to the hit. You need time to do that. That's what acceleration is by definition - the rate of increase in velocity over time.
You can accelerate on object with minimal force if you have enough time. In a pool stroke you are limited in how much time you can apply a force because your stroke is only just so long. You need distance to make that increase in velocity happen without applying a sudden and violent force, so long strokes tend to be more smooth and fluid. That's what the forward flick of the wrist provides that the hammer stroke cannot. Distance. The hammer stroke does not move the cue in a forward direction at all, so it absolutely cannot increase its velocity.
It seems you either did not read, or if so, it seems you did not take into consideration all that was said prior to me posting that slight analogy, where I said 'SORT OF LIKE' & not EXACTLY LIKE. Obviously acceleration is a function of time.
The point was the short distance traveled by the hand like the tip for the hit. I prefaced it with keeping the forearm still & making the motion vs allowing the forearm to move as it naturally 'wants' to do when making the motion.
The bottom of the forearm at the wrist along with the TOP of hand 'snaps' forward & the cue juts or thrusts forward with the cue & tip moving relatively straight forward compared to the wrist going from ulnar to radial where the cue & tip wants to go up toward the sky.
I must have missed it, but I do not recall CJ saying that it added power to a pendulum swing or even any particular pool stroke. I believe he said it can be a source of power & a means of keeping the cue on track.
But... I could be wrong.
The cue does not just lay in CJ's fingers like that of a cradle grip for a pendulum stroke & CJ does not use a pendulum swing. CJ plays like an athlete that controls the implement of the sport, like a tennis racket, or golf club.
It's about quick acceleration over a short distance. Hence the later analogy of being hit by a car traveling
only a quarter mile & reaching a speed of 200 MPH vs one that has
traveled for 30 miles or more but is still only moving at 5 or 10 mph.
Just last week a 20 year old was doing a line drill & was using too much stroke to stay in shape for the next shot. I showed him how little & how much I could spin & move the ball with control with a stroke so small that he could barely see the tip move. There was no need for any 'full length' cue motion. naturally he was somewhat amazed & started asking a bunch of questions.
That was a balancing act of cue speed applied properly to control momentum.
What CJ is trying to relay is sort of like a horse race where there is a walk up start. The horses are just walking up to the the line & when they reach the line they bolt into the acceleration of a run.
However, you are correct about one thing. I know almost nothing about martial arts... nor playing the violin , nor fly casting. I don't know that much about 'jokeying' a horse or racing dragsters either.
But...I have played some football, baseball, golf, & a lot of tennis. I was offered a position teaching tennis but turned it down in my early 20s. Although I have coached football, baseball, basketball & golf at ages from 4 yrs. old to young adults. Also I've been playing pool rather well for the last 47+ years since I was 13. Not that any of that matters or means anything to you. You just don't know what you don't know.
What happened to you putting me on ignore & your earlier 'promise' to never post in a thread that I posted in? :wink:
Best 2 You & All,
Rick