context: There is a better than even chance that Brian is gray. We believe that Greg is white. It is highly unlikely that Daniel put down the milk.
hypothesis: It is almost certain that either Brian is gray, or Greg is white.
valid_hypothesis: Chances are about even that either Brian is gray, or Greg is white.
invalid_hypothesis: It is almost certain that either Brian is gray, or Greg is white.
hypothesis_assertion: Either Brian is gray, or Greg is white.