Variations: The more generic appeal to purity can be seen when the claim is that someone “does not have enough of” something, which is why they are not meeting the condition. For example, “If you have the desire for success, you will succeed!” Billy has the desire but is not succeeding. Therefore, Billy’s desire is not strong (or pure) enough. The difference between the appeal to purity and the no true Scotsman is one of degree versus authenticity.
