What is the nature of reality, and why does it matter? Whether we know it or not, we all have a worldview - a set of very core beliefs and assumptions about the way the world works and our place within it. Sometimes those assumptions work, sometimes they don't, but as long as they are left unexamined, we can't say we've come any closer to actually understanding who we are and what we're doing. That's the great gift that philosophy can give us: a roadmap for meaning. That doesn't mean it's...