Yes, Aumann agreement is not very realistic - but the point is that the partners can be expected to relatively quickly reach agreement, without very much effort - if they are honest, truth-seekers with some energy for educating others - and know the other is the same way.

250 rounds of "I update my estimate to..." strikes me as rather a lot of effort, but that's not the important point here. My question is, assume that Alice and Bob are indeed honest truth-seekers with some energy for educating others, and have common knowledge that this is so. What then will the Aumann agreement process actually look like for this example, where the only thing that is directly communicated is each party's latest expectation of the value of the paper? Will it converge to the true value of the paper in both of the following scenarios:

1. The true value is 0.1 because of the prior publications to which the present paper adds little new, publications which Bob knew about but Alice didn't.
2. The true value is 0.8 because it's excellent work which the authors need to improve their exposition of to make it accessible to non-experts like Bob.