context: It is unlikely that Jeff went to the bedroom. Chances are about even that Brian is a swan. We doubt that John moved to the office.
hypothesis: It is highly unlikely that either Brian is a swan, or John moved to the office.
valid_hypothesis: Chances are about even that either Brian is a swan, or John moved to the office.
invalid_hypothesis: It is highly unlikely that either Brian is a swan, or John moved to the office.
hypothesis_assertion: Either Brian is a swan, or John moved to the office.