context: It is almost certain that Brian is a swan. There is a better than even chance that Sandra dropped the apple. We believe that Winona is a mouse.
hypothesis: It is likely that brian is a swan, and Winona is a mouse.
valid_hypothesis: It is likely that brian is a swan, and Winona is a mouse.
invalid_hypothesis: There is little chance that brian is a swan, and Winona is a mouse.
hypothesis_assertion: Brian is a swan, and Winona is a mouse.