context: A bearded man, using a wooden pole, stirs bowl-like objects around in a large metal box filled with water.
hypothesis: Chances are about even that a man is testing out his new miniature boats.
valid_hypothesis: It is impossible that a man is testing out his new miniature boats.
invalid_hypothesis: Chances are about even that a man is testing out his new miniature boats.
hypothesis_assertion: A man is testing out his new miniature boats.