for the glass fragment to strike her, the glass has to be smash at a precise speed and precise angle with a precise orientation, and possibly if the glass has any pre-existing defect. 7 Q$ ~9 F% Y5 q
7 |) D, R* k( z# J1 Ztvb now,tvbnow,bttvbthe possibiolity is endless which will make it impossible to repeat the experiment. |