‘Mum, what is nature?’ ‘A quantum wave function, sweetie.’


I vaguely remember back in my preteen years asking my mother what nature was, but not her reply. I suspect it was similar to the one she gave when I asked why it’s often said time is money. To that, I distinctly recall her answer: ‘You’ll understand some day.’ That was her way of deferring what would have been a complicated explanation of economics with the expectation that I would one day figure it out myself. Unlike my mother, The Big Picture: On the Origins of Life, Meaning and the Universe Itself, by Sean Carroll, does offer an answer to an equally complex question, ‘what is nature?’—a satisfyingly simple and concrete one: a quantum wave function. Continue reading