Quote ="scosha"Incorrect. We're talking about DOWNWARD MOTION. Assuming you went to school, checkout Newton's Third Law - it's all about equal and opposite forces.
A mass (eg hand/finger/Gnats c**ck-hair etc) will exert downward pressure if on top of another body (eg ball) but if the upward pressure is exceeded or equalled, then DOWNWARD MOTION will not occur. That is a scientific certainty!
Since Keinhorst's finger didn't appear to be on top of the ball, then how can he exert downward pressure resulting in downward motion??'"
Keinhorst's arm/fingers were coming from above the ball downwards onto the ball. This would then create a force upon the ball. Keinhorst did not scoop his fingers under the ball to lift the ball up.
As for your upward pressure argument, there can only be upward pressure if the ball is bouncing up - there is no evidence of this. However, the only thing that would in that case necessitate a NO TRY decision would be if there was separation of the fingers from the ball whilst the ball was in the air, thus proving a knock-on . There is also no evidence of this occurring.