Philip’s 2019 book, Galileo's Error: Foundations for a New Science of Consciousness ... What’s the difference between panpsychism and philosophical idealism? ... John: Solipsism is “an absolute impediment to a truly scientific theory of consciousness” ... Does panpsychism “cheat” when it comes to philosophy’s fundamental problems? ... The moral dimension of panpsychism ... Hallucinogens and mystical experience ...