An experiment to test this hypothesis would be to get samples of water at a range of temperatures and place an identical rock in each one. The rocks would sink at the same rate in all the samples except for the ones below 0°C (32°F), where they would not sink at all. Because only two sinking rates were observed, sinking and not sinking, Clark’s hypothesis indicating a continuous relationship would be disproved, prompting the creation of a revised hypothesis such as
Below 0°C, rocks do not sink in water.
Further investigation would lead to the discovery that water becomes a solid below 0°C and that Clark threw his rock into a lake covered in solid water, or ice.