Sam Harris speaks with Tim Maudlin about the foundations of physics and metaphysics. They talk about the nature of scientific reductionism, emergence, functionalism, the nature of time, presentism vs eternalism, causation, the nature of possibility, the laws of nature, David Lewis's possible worlds, rival interpretations of quantum mechanics, free will, and other topics.

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Learning how to train your mind is the single greatest investment you can make in life. That's why Sam Harris created the Waking Up app. From rational mindfulness practice to lessons on some of life's most important topics, join Sam as he demystifies the practice of meditation and explores the theory behind it.