"It's hard, in Golarion, to make certain points, when you're an alien. I mean I'm sure there'd be equally straightforward points I could make locally, I just don't know what they are."
"What I ought to do, at this point, is demonstrate to you one of the standard ways to confuse a mortal. But it would take a very reliable example, with only 8 subjects now to test it on, which I'd have to divide into three groups. And more importantly, I don't know the things about Golarion I'd need to know, to construct that example... maybe Carissa can tell me how to construct it, actually? Though it'd invalidate the demonstration for her. Hold on."
Message to Carissa: I'm looking for something that has both a quantity and a quality. And then something else which just has a comparable quality, but no comparable quantity, and is otherwise as similar as possible. It's got to be something which, apart from quality, would reliably make somebody think that it was about equal value. What I'm going to do is offer three different groups choices between pairs of the low-quality high-quantity item, the medium-quality nonquantitative item, and the high-quality low-quantity item, and people tend to think that quantity matters more than quality but only when they can compare quantities directly, and otherwise the quality becomes salient, so the three groups' preferences will go in a circle.