"If instead we were just using scales from 1 to 12, with no common reference points, to understand what somebody else meant by their rating - well, it would still seem pretty plausible that strictly more complex events should not be rated as more likely. But there'd be no obvious way to take the scaffold from the probability assignment to my hand, and say how right I'd been exactly. That's one way of seeing why somebody sending out merchant ships might have trouble figuring out what to do with the claim, if you said the chance of a ship making it back was 9 on a scale from 1 to 12."
"And now that probabilities actually mean something to us, and aren't just wakalixes unto us, we can consider more Law-fragments about what to do with probabilities once we have them."