When is a fact not a fact? Can reality be set aside or ignored? Abraham Lincoln, who was known for using homespun anecdotes to make effective points, is said to have once asked a critic, “How many legs does a dog have if you count his tail as a leg?” “Well,” the man said, “In that case, five legs.” “No,” Lincoln replied, “Only four! Saying that a dog’s tail is a leg does not make it a leg.” Such simple yet profound wisdom seems lost on much of society today.