context: It is improbable that John left the milk. Chances are about even that Julius is a frog. It is almost certain that Greg is a lion.
hypothesis: It is highly unlikely that greg is a lion, or John left the milk.
valid_hypothesis: It is almost certain that greg is a lion, or John left the milk.
invalid_hypothesis: It is highly unlikely that greg is a lion, or John left the milk.
hypothesis_assertion: Greg is a lion, or John left the milk.