Naturalism isn’t an obvious, default way to think about the world. The case in its favor has built up gradually over the years, a consequence of our relentless quest to improve our understanding of how things work at a deep level, but there is still work to be done. We don’t know how the universe began, or if it’s the only universe. We don’t know the ultimate, complete laws of physics. We don’t know how life began, or how consciousness arose.
