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. 公仔箱論壇0 F, x( D- q7 h* `. N9 Y
8 h4 [+ S' c7 Pthe possibiolity is endless which will make it impossible to repeat the experiment. |