Let me try addressing your comment more bluntly to see if that helps.
Your complaint about Klurl’s examples are that they are “coincidentally” drawn from the special class of examples that we already know are actually real, which makes them not fictional.
No, Klurl is not real. There are no robot aliens seeding our planet. The fictional evidence I was talking about was not that Earth right now exists in reality right now, it was that Earth right now exists in this story specifically at the point it was used.
If you write a story where a person prays and then wins the lottery as part of a demonstration of the efficacy of prayer, that is fictional evidence even though prayer and winning lotteries are both real things.
If you think that the way the story played out was misleading, that seems like a disagreement about reality, not a disagreement about how stories should be used.
No, I really am claiming that this was a misuse of the story format. I am not opposed to it because it’s not reality. I am opposed to it because the format portends that the outcomes are illustrations of the arguments, but in this case the outcomes were deceptive illustrations.
If Trapaucius had arrived at the planet to find Star Trek technology and been immediately beamed into a holding cell, would that somehow have been less of a cheat, because it wasn’t real?
It would be less of a cheat in the sense that it would give less of a false impression that the arguments were highly localizing, and in that it would be more obvious that the outcome was fanciful and not to be taken as a serious projection. But it would not be less of a cheat simply in the sense that it wasn’t real, because my claim was never that this was cheating for using a real outcome.
To the first part: yes, of course, my claim isn’t that anything here is axiomatically unfair. It absolutely depends on the credences you give for different things, and the context you interpret them in. But I don’t think the story in practice is justified.
This is indeed approximately the source of my concern.
I think in a story like this if you show someone rapidly making narrow predictions and then repeatedly highlight how much more reasonable they are than their opponent as a transparent allegory for your narrow predictions being more reasonable than a particular bad opposing position from a post signposted as nonfiction inside a fictional frame, there really is no reasonable room to claim that actually people weren’t meant to read things into the outcomes being predicted. Klurl wasn’t merely making hypothetical examples, he was acting on specific predictions. It is actually germaine to the story and bad to sleight-of-hand away that Klurl was often doing no intellectual work. It is actually germaine to the story whether some of Trapaucius’ arguments have nonzero Baeysean weight.
The claim that no simple change would have solved this issue seems like a failure of imagination, and anyway the story wasn’t handed down to its author in stone. One could just write a less wrong story instead.