context: There is almost no chance that Fred moved to the office. Chances are slight that Bernhard is a swan. We believe that Bill went to the garden.
hypothesis: There is a better than even chance that bill went to the garden, and Bernhard is a swan.
valid_hypothesis: It is improbable that bill went to the garden, and Bernhard is a swan.
invalid_hypothesis: There is a better than even chance that bill went to the garden, and Bernhard is a swan.
hypothesis_assertion: Bill went to the garden, and Bernhard is a swan.