context: Chances are about even that John went to the hallway. It is impossible that Mary left the milk. It is probably not the case that Greg is green.
hypothesis: Chances are slight that greg is green, or John went to the hallway.
valid_hypothesis: There is a better than even chance that greg is green, or John went to the hallway.
invalid_hypothesis: Chances are slight that greg is green, or John went to the hallway.
hypothesis_assertion: Greg is green, or John went to the hallway.