context: It is probable that John moved to the office. It is impossible that Brian is a swan. We believe that Julie is in the bedroom.
hypothesis: Chances are about even that either John moved to the office, or Julie is in the bedroom.
valid_hypothesis: Chances are about even that either John moved to the office, or Julie is in the bedroom.
invalid_hypothesis: It is certain that either John moved to the office, or Julie is in the bedroom.
hypothesis_assertion: Either John moved to the office, or Julie is in the bedroom.