So now we're re-defining the laws of physics as set out by our man Issac Newton in order to justify Youngs dive?
How minimal does the contact have to be to justify 'falling over'(diving)? It was a dive about that there is no question, as diving is not just when there is no contact its also when there is little contact and the player goes down when they could have stayed up. Unless Young suffers from vertigo or had downed a few whiskeys just before coming on, there is no way that very small contact would have caused him to fall over.
Also a players body language can tell you a lot about whether it was manufactured. It was clearly very minimal contact and an exaggerated fall, yet he screamed for a penalty as though it was a stone waller, followed by high fiving Kagawa as soon as it was awarded. Nothing more than a cheat, and no more a cheat than Suarez, Drogba, Neymar etc, the main difference being that those players have a million more things to offer than just that so their entire game does not revolve around diving to win penalties. The reason people see him as embarrassing is not purely because he dives, its because he dives and is also a crap player that shouldn't be playing for United anyway.