context: There is almost no chance that Julius is a lion. Chances are slight that Mary left the football. We doubt that Greg is a frog.
hypothesis: It is probable that either Mary left the football, or Greg is a frog.
valid_hypothesis: It is probably not the case that either Mary left the football, or Greg is a frog.
invalid_hypothesis: It is probable that either Mary left the football, or Greg is a frog.
hypothesis_assertion: Either Mary left the football, or Greg is a frog.