Could there be a real possibility that everything you think is reality is actually a simulation? Professor Brian Greene has spent decades trying to understand the true nature of our universe and he says the argument that we could be living inside one actually holds up. Brian is a theoretical physicist at Columbia University and one of the world’s best-known thinkers on string theory, space, time and the fundamental nature of reality. By 12 years old, Brian had already exhausted the maths curriculum at his high school. He has now spent decades trying to answer a question that sounds simple but might be the biggest question we can ask: Why are we here? Brian has the ability to take ideas that should feel completely inaccessible and make you feel like you can actually understand them. We discussed things like: - Why Brian has high confidence that humans do not have free will - How travelling hundreds of years into the future is allowed by the laws of physics - Why he believes AI will eventually become conscious - Whether an infinite universe means there could be another version of you somewhere out there - What actually happens when the universe eventually reaches its end He explained that we’re living in an incredibly small, rare window in the history of the universe. A tiny moment where conscious beings are actually here to look around, fall in love, build things and understand the world they’re standing in. Because eventually, the stars will burn out. Matter (atoms, planets) will begin to disappear. Even black holes are predicted to evaporate into nothing. On paper, it sounds bleak. But listening to him, I felt the exact opposite. That’s what I loved about speaking to Brian. These huge ideas somehow end up feeling very personal. Watch our full conversation now on YouTube, Spotify or Apple Podcasts. Search "The Diary Of A CEO Brian Greene" ❤️👊🏾 #simulation #universe #thediaryofaceo - @steven