context: It is likely that John dropped the apple. Chances are slight that Julius is a rhino. It is probably not the case that Greg is green.
hypothesis: There is almost no chance that either John dropped the apple, or Greg is green.
valid_hypothesis: There is a better than even chance that either John dropped the apple, or Greg is green.
invalid_hypothesis: There is almost no chance that either John dropped the apple, or Greg is green.
hypothesis_assertion: Either John dropped the apple, or Greg is green.