What is worse—the car that won’t start or the car you’re not sure if it’ll start or not? I might argue that the one that will not start is the preferable one. You at least know what you’re getting there. You’re not going to make plans to use that car, only to have them dashed by seemingly random failures. You know that you have to do some work on it, or get it towed, or just let it sit till you have the time or money to fix it. You have confidence in that car—in this case, confidence that it will not work—rather than a total lack of certainty. At least with a totally busted car, you won’t get stranded on the side of the freeway miles from home.