context: We doubt that Greg is a rhino. Chances are about even that Sandra left the milk. We doubt that John is in the bathroom.
hypothesis: There is little chance that greg is a rhino, and Sandra left the milk.
valid_hypothesis: There is little chance that greg is a rhino, and Sandra left the milk.
invalid_hypothesis: It is almost certain that greg is a rhino, and Sandra left the milk.
hypothesis_assertion: Greg is a rhino, and Sandra left the milk.