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! y# C+ \: p0 m4 U' z4 P
% `% D9 [% ?' e. } f. B/ {the possibiolity is endless which will make it impossible to repeat the experiment. |