context: We doubt that Brian is a frog. There is little chance that Greg is white. We believe that John left the milk.
hypothesis: There is a very good chance that john left the milk, or Brian is a frog.
valid_hypothesis: There is a very good chance that john left the milk, or Brian is a frog.
invalid_hypothesis: It is unlikely that john left the milk, or Brian is a frog.
hypothesis_assertion: John left the milk, or Brian is a frog.