@Stahesh @DStheo After the horse threw the man's son off, the son's leg was broken, and the man's neighbors felt back for the man's misfortune. Then the military was rounding up all the young men to fight in a war, and man's son was spared because of his broken leg, and the man's neighbors praised his luck.
The point being that what seems bad can be good, and what seems good can be bad. Just do the obvious thing, and leave the rest aside.