context: It is highly likely that Sandra took the milk. It is unlikely that John is in the bathroom. We doubt that Fred left the football.
hypothesis: Chances are slight that fred left the football, or Sandra took the milk.
valid_hypothesis: It is highly likely that fred left the football, or Sandra took the milk.
invalid_hypothesis: Chances are slight that fred left the football, or Sandra took the milk.
hypothesis_assertion: Fred left the football, or Sandra took the milk.