Comment by kantahayashi

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!