Russell’s reasons why “there is no reason whatever to suppose that it is true [that] the whole of life is a dream, in which we ourselves create all the objects that come before us” (p. 12). simplicity. intuition/instinct. justification. phenomenal conservatism.
This topic seemed interesting. Unpublished disproofs do exist for solipsism, idealism, Boltzmann Brains, life-after-death, and telepathy. These don’t use circular logic, assumptions, probability, or intuition. In other words, it is possible to prove that a physical world and mechanistic laws do exist.