It is seen as alomost one of the holy grails of some martial arts, the abilty to floor some one from a very close distance or no distance at all
Where i agree it is very important, i wonder if the one inch punch is taking things a little too far (or too close depending on your point of view)
Most of demostartion of the technique as the demostartor standing and trying to get to a point of visualsation and relaxation while his poor student stands there waiting, before being 'projected' by a punch. there are few problem with this idea form the ooutset. clearly you won;t be able to standther for that long, and no one is going to be that still. but also is it really a punch? if i hit some one hard enough to send them across the floor then surely i would be some damage to my uke, but in these demos the uke springs to his feet with a suitabley pained yet amazed look on his face before going back in for more.
so clearly the demo that is popularly shown is um........ maybe not as tru as it could be. but what actually usng the one in punch. is it possible? or even practical. i agree that close range punching is very impostant but an inch? i can't actually off th top of my head thinking of atime when i would have to do that, when my hand would be in a relaxed fist that close to some one who is attacking me. (if something comes to me after posting this i will post again)
i would be very interested in hear other view ponts on this