context: We doubt that Bernhard is a frog. We doubt that Mary went to the garden. Chances are slight that Brian is white.
hypothesis: It is highly likely that either Brian is white, or Bernhard is a frog.
valid_hypothesis: It is probably not the case that either Brian is white, or Bernhard is a frog.
invalid_hypothesis: It is highly likely that either Brian is white, or Bernhard is a frog.
hypothesis_assertion: Either Brian is white, or Bernhard is a frog.