👉 Non-existenceism is a philosophical stance that holds that there is no being or substance at all, and that the existence of something is relative to one's own perception. In other words, it suggests that there are no entities or things outside of our own minds, thoughts, and perceptions. This idea can be seen as a rejection of the traditional view of reality where we believe in an objective world with measurable properties. Non-existenceism challenges this notion by suggesting that all phenomena, including physical matter