“Say you have a dog, but you need to create a duck on the financial statements. Fortunately, there are specific accounting rules for what constitutes a duck: yellow feet, white covering, orange beak. So you take the dog and paint its feet yellow and its fur white and you paste an orange plastic beak on its nose, and then you say to your accountants, ‘This is a duck! Don’t you agree that it’s a duck?’ And the accountants say, ‘Yes, according to the rules, this is a duck.’ Everybody knows that it’s a dog, not a duck, but that doesn’t matter, because you’ve met the rules for calling it a duck.”