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Author here. I tested Jev with a fair die 400 times without telling it the die result. The true probability of face 1 is 1/6, but Jev always chose face 1 and the probability it returned was about 83%.

Code and data are here: https://github.com/KantaHayashiAI/jev-does-not-play-dice

Happy to answer questions!

saw this yesterday (when someone else posted your post), thanks for sharing such easy to understand cases which show Jev does not produce real world likelihoods for the choices

related, https://www.alexmolas.com/2026/09/23/jev-cant-be-calibrated....

Thanks! I'm really glad that you read my article.
it's the kind of posts I come to HN for!

you did a interesting little analysis of a hot topic, wrote it up nicely, makes an interesting facet of Jev et al very clear

– Will I see a crocodile today?

– Yes: 0.1% / No: 99.9%

– ...but I work at a crocodile farm!