Originally Posted by sureshs
This is not exactly the point being discussed, which is an even more absurd claim, but it is a nice question. I would say that inward motion is not just right to left - it has to be a motion towards the body at contact time. I think some people found it too literal and want to think of right to left as inward also, instead of well, simply right to left!
In any case, the way you have framed it is what some people appear to be thinking, so let us go with that.
The answer is, of course, that it is not possible. Pro videos show the racket face both almost perpendicular to the ground, and perpendicular to the intended target direction, at contact. The racket continues in this path for a while before turning over.
sure, the racket may have some forward movement. But if it moves --at all- from right to left than it seems to me it is impossible to have the racket contact the ball anywhere past 6 o'clock mark (meaning between 6 and 12). So it seems impossible to hit inside out FH that way.