Missives from a fly bottle
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Last revised 3 October 2018
5. The oracle

Here’s something more complex but still pretty basic:
Athens will prevail if the oracle said so for the oracle is always right. But we know that the oracle said so for Eubulides reported this and Eubulides never lies.
Something is going on with Athens, Eubulides and the oracle. What’s the structure of the reasoning?