That’s not quite the law of the excluded middle. In your first example, leaving isn’t the negation of buying the car but is just another possibility. Tertium non datur would be He will either buy the car or he will not buy the car. It applies outside formal systems, but the possibilities outside a formal system are rarely negations of one another. If I’m wrong, can someone tell me?
Still, planting the “seed of destruction” definitely seems like a good idea, although I’d think caution in specifying only one event where that would happen. This idea is basically ensuring beliefs are falsifiable.
That’s not quite the law of the excluded middle. In your first example, leaving isn’t the negation of buying the car but is just another possibility. Tertium non datur would be He will either buy the car or he will not buy the car. It applies outside formal systems, but the possibilities outside a formal system are rarely negations of one another. If I’m wrong, can someone tell me?
Still, planting the “seed of destruction” definitely seems like a good idea, although I’d think caution in specifying only one event where that would happen. This idea is basically ensuring beliefs are falsifiable.