context: Chances are slight that Bill left the apple. It is impossible that Bernhard is a swan. It is highly unlikely that John moved to the garden.
hypothesis: It is almost certain that bill left the apple, or Bernhard is a swan.
valid_hypothesis: There is little chance that bill left the apple, or Bernhard is a swan.
invalid_hypothesis: It is almost certain that bill left the apple, or Bernhard is a swan.
hypothesis_assertion: Bill left the apple, or Bernhard is a swan.