The question of existence has long been a cornerstone of philosophy, sparking debates that delve into the very fabric of reality. At its most fundamental level, one might wonder: is it even possible that nothing exists? If we strip away everything we think we know, what are we left with? Such ponderings lead us to consider not just the nature of physical objects or living beings, but to question the essence of existence itself. To explore this idea, we must first examine the concept of "existence." In everyday life, we are surrounded by tangible manifestations of reality: trees, buildings, people, and ideas. However, from a philosophical standpoint, the assumption that these entities are indeed real can be challenged. Consider the famous philosophical statement by René Descartes: "Cogito, ergo sum" (I think, therefore I am). This implies that the very act of thought is the basis for existence. Yet, could it be that the cognitive processes themselves are ...