context: There is a better than even chance that Brian is a frog. It is unlikely that Bill moved to the garden. Chances are slight that John went to the hallway.
hypothesis: It is certain that bill moved to the garden, and Brian is a frog.
valid_hypothesis: There is little chance that bill moved to the garden, and Brian is a frog.
invalid_hypothesis: It is certain that bill moved to the garden, and Brian is a frog.
hypothesis_assertion: Bill moved to the garden, and Brian is a frog.