Life is absolutely unpredictable. None of us knows what lies around the corner. Will someone stand on one’s skirt while crosses the street at a red light, or whether air conditioner will fall on someone’s head, while she(he) admires the dress in the window, or whether someone will fall into a manhole and become a Ninja Turtle… Therefore, we should arm ourselves with cameras and wait for successful last photo! P.S. Of course, mounted material, in this case, is preferable than the original.