context: We doubt that Julius is green. It is almost certain that Bernhard is a swan. We believe that John went to the hallway.
hypothesis: It is likely that either John went to the hallway, or Julius is green.
valid_hypothesis: It is likely that either John went to the hallway, or Julius is green.
invalid_hypothesis: It is improbable that either John went to the hallway, or Julius is green.
hypothesis_assertion: Either John went to the hallway, or Julius is green.