That's a very good (related) idea, I'll have to see how it can be integrated. I've been thinking a lot about what makes a prediction/promise testable. So far I

That's a very good (related) idea, I'll have to see how it can be integrated. I've been thinking a lot about what makes a prediction/promise testable. So far I've summarized my conclusions in the 'How it works' page, but if anyone has any references on this I'd love to hear about it.