context: We doubt that Julius is a swan. Chances are slight that Sandra left the milk. Chances are slight that John took the apple.
hypothesis: It is almost certain that julius is a swan, or John took the apple.
valid_hypothesis: It is probably not the case that julius is a swan, or John took the apple.
invalid_hypothesis: It is almost certain that julius is a swan, or John took the apple.
hypothesis_assertion: Julius is a swan, or John took the apple.