2026 Theology, Cosmology, and Philosophy Practice Test – Complete Exam Preparation

Solipsism holds that only your own mind is certain. This defining claim is why it’s generally rejected: if only your mind is certain, there’s no secure basis to claim that anything outside your thoughts—other minds, objects, or the external world—really exists or is knowable. That makes ordinary knowledge, science, and meaningful communication suspect, since all such enterprises rely on a shared reality that you can’t independently justify from solipsist premises. The other statements misstate the position: solipsism does not claim that all minds are equally certain, nor that knowledge is completely impossible, nor that others’ minds are more certain than your own.