Once upon a time a cat who prided herself on her wit and wisdom was prowling about the barn in search of food and saw a tail protruding from a hole. "There is the conclusion of a rat," she said. Then she crept stealthily toward it until within striking distance, when she made a jump and reached it with her claws. Alas! it was not the appendage of a rat, but the tail of a snake, who immediately turned and gave her a mortal bite. And if such a story has a moral, it surely must be that it is indeed dangerous to jump at conclusions.