Jim talks with Stuart Kauffman about cosmology, fundamental physics, and the nature of dark matter, dark energy, and inflation. They discuss how Stuart moved into these fields, the Michelson-Morley experiment, special relativity, cosmic background radiation, the new period of precision cosmology, dark energy, why the universe is expanding faster, the Hubble tension, the baryonic Tully-Fisher relation, entanglement, nonlocality & whether it is fundamental, quantum gravity, why particle physics is collectively autocatalytic, stepping through the delay hypothesis, Planck time, the past hypothesis problem, the life ensemble, dark matter as a Ricci soliton, requirements for the rate of inflation, why cold dark matter may explain the cosmic web, Mach's principle, and much more.