context: We doubt that Brian is a swan. It is highly likely that John went to the hallway. There is a very good chance that Bernhard is a lion.
hypothesis: We believe that either John went to the hallway, or Brian is a swan.
valid_hypothesis: We believe that either John went to the hallway, or Brian is a swan.
invalid_hypothesis: It is improbable that either John went to the hallway, or Brian is a swan.
hypothesis_assertion: Either John went to the hallway, or Brian is a swan.