context: There is almost no chance that Mary is in the hallway. It is highly likely that Lily is white. We believe that Brian is a frog.
hypothesis: We doubt that lily is white, and Brian is a frog.
valid_hypothesis: It is probable that lily is white, and Brian is a frog.
invalid_hypothesis: We doubt that lily is white, and Brian is a frog.
hypothesis_assertion: Lily is white, and Brian is a frog.