context: It is highly likely that Sandra dropped the milk. We doubt that Julius is a frog. It is likely that John grabbed the milk.
hypothesis: There is a better than even chance that either Julius is a frog, or John grabbed the milk.
valid_hypothesis: There is a better than even chance that either Julius is a frog, or John grabbed the milk.
invalid_hypothesis: It is improbable that either Julius is a frog, or John grabbed the milk.
hypothesis_assertion: Either Julius is a frog, or John grabbed the milk.