What is the physical world ultimately made of? Unless consciousness = information = mathematics = nothing, they can’t all be right.
“I believe that consciousness and its contents are all that exists. Spacetime, matter and fields never were the fundamental denizens of the universe but have always been, from their beginning, among the humbler contents of consciousness, dependent on it for their very being.”–Donald Hoffman, Cognitive Scientist
“It is difficult for the matter-of-fact physicist to accept the view that the substratum of everything is of mental character. But no one can deny that mind is the first and most direct thing in our experience, and all else is remote inference.”–Sir Arthur Eddington, Astrophysicist
“…quantum physics teaches us to abandon the distinction between information and reality. … For me the strongest argument for a reality independent of us is the randomness of the individual quantum event, like the decay of a radioactive atom. There is no hidden reason why a given atom decays at the very instant it does so. So if reality exists and if we will never be able to make an operational distinction between reality and information, the hypothesis suggests itself that reality and information are the same. We need a new concept which encompasses both. In a sense, reality and information are the two sides of the same coin.”–Anton Zeilinger, Quantum Physicist
“Our external physical reality is a mathematical structure.” People are “self-aware substructures” who “subjectively perceive themselves as existing in a physically ‘real’ world””–Max Tegmark
Nothing (which is actually something).
The existence of physical laws made the universe create itself out of nothing.