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Abstract:
In a range of contexts, one comes across processes resembling inference, but
where input
propositions are not in general included among outputs, and the operation is
not in any way
reversible. Examples arise in contexts of conditional obligations, goals,
ideals, preferences,
actions, and beliefs. Our purpose is to develop a general theory of
propositional input/output
operations. Particular attention is given to the special case where outputs may
be recycled as
inputs.
