Hume is skeptical of this assertion because he believes that the only justification for a person to make such a claim stems from their experience of seeing the rock cause a splash on different occasions. Hume would hold that if a person had never thrown a rock into a river and never witnessed a splash, they would not conclude or ascertain the idea that the rock would cause a splash. The laws of gravity do not give rise to the conclusion that a rock being thrown into a river would cause a splash. Hume does not assert that the rock will not cause a splash but he holds that how humans arrive at such a conclusion is irrational especially since he poses that the actual cause that makes the splash in the water is unknowable by humans. Hume suggests that there is a secrete cause that connects the cause and effect that humans observe when witnessing a rock thrown into the water and a slash