Strange things are said about time: that it’s illusory, that it has no direction. But what about space, or the space-time continuum? What exactly is space-time? Are space and time fundamental features of the world? How do Einstein’s special and general theories of relativity change our understanding of space-time? Is there a distinction to be made between space and time, or must the two concepts be united into a single interwoven continuum? John and Ken expand their space-time with Tim Maudlin from NYU, author of Philosophy of Physics: Space and Time.
Part of our series A Philosophical Guide to the Cosmos.