This is the Wikipedia definition of reality which I think will suffice for the opening premise of this debate because it is probably scrutinised more than any other 'reliable source': REALITY is the sum or aggregate of all that is real or existent within a system, as opposed to that which is only imaginary. The term is also used to refer to the ontological status of things, indicating their existence. In physical terms, reality is the totality of a system, known and unknown. Philosophical questions about the nature of reality or existence or being are considered under the rubric of ontology, which is a major branch of metaphysics in the Western philosophical tradition. Ontological questions also feature in diverse branches of philosophy, including the philosophy of science, philosophy of religion, philosophy of mathematics, and philosophical logic. These include questions about whether only physical objects are real (i.e., Physicalism), whether reality is fundamentally immaterial (e.g., Idealism), whether hypothetical unobservable entities posited by scientific theories exist, whether God exists, whether numbers and other abstract objects exist, and whether possible worlds exist. I'd like to give you an example of philosophical tautology just to kick off the argument.: "If a tree falls in a forest and no one is around to hear it, does it make a sound?" I believe that it does. However, I am not going to give my reason why at this juncture. I'd like to hear some of your thoughts on the question. In the meantime, I would like to know what people think reality is, themselves. I feel that I must mention the importance of the school of philosophy known as Epistemology which is further divided into Rationalism and Empiricism. Both of these form the basis of the Human experience. (I.E. 1. the knowledge we are born with and 2. that which we learn through our life experiences.) Existentialism is essentially what we humans experience ourselves, and for each individual, the most important way in which we perceive ourselves and our world; the universe even. I personally prefer this line of thought and am unlikely to consider anything outside of this philosophical concept. We are dependent on our senses to evaluate our lives. Do we need any reason to disbelieve our senses? Do you think reality exists because it is all you know; all you've experienced and simply makes sense to your life experiences? Or, do you believe that this reality is outside of your existence, a metaphysical system even, and that there is another explanation for it all? I eagerly await to read what are likely to be 'conspiracy theories'. Or from you devout pseudo-intellectuals. P.S. Again, NO survey required. Just thoughts, opinions and suggestions (keep them clean). Thank you.