I don’t know exactly what properties our physical reality has, but I’m confident that these properties exist in the sense of…

“I don’t know exactly what properties our physical reality has, but I’m confident that these properties exist in the sense of being well defined: I have no doubt that nature knows what it’s doing!”

–Tegmark, Max.Our Mathematical Universe: My Quest for the Ultimate Nature of Reality. London: Penguin Books, 2014. (viacarvalhais)