context: It is highly likely that Bill is in the office. It is likely that Bernhard is a swan. We doubt that Mary left the football.
hypothesis: There is little chance that either Bill is in the office, or Mary left the football.
valid_hypothesis: We believe that either Bill is in the office, or Mary left the football.
invalid_hypothesis: There is little chance that either Bill is in the office, or Mary left the football.
hypothesis_assertion: Either Bill is in the office, or Mary left the football.