context: It is almost certain that Bill left the milk. It is improbable that Greg is a swan. We doubt that John moved to the office.
hypothesis: It is impossible that bill left the milk, or Greg is a swan.
valid_hypothesis: It is almost certain that bill left the milk, or Greg is a swan.
invalid_hypothesis: It is impossible that bill left the milk, or Greg is a swan.
hypothesis_assertion: Bill left the milk, or Greg is a swan.