Jon AS, I'm tied up with other deadlines, and I'll post a longer article that goes into all the details in a few more days. Re rejecting R669: In R670, CSP explicitly stated that the scroll is equivalent to a nest of two negations (12 June 1911). On the next day, he wrote that it's so easy to mistake the cellar door of hell for the cellar door of heaven. That is the day when he consigned that ridiculous story to the netherworld.. Re intuitionistic logic: it is incompatible with Peirce rules of inference, which are the foundation for every EG proof in every version of EGs. John
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