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Professor Brian Greene explains that the universe likely contains extra dimensions beyond the familiar three of space and one of time that are so small and tightly curled up, they are invisible to our senses.

19,123 Aufrufe • vor 4 Monaten •via X (Twitter)

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Physicist Avi Loeb just told me that futuristic technology could enable humanity to travel “faster than the speed of light.” But we would have to move beyond the three dimensions we are familiar with. And he speculated that advanced alien civilizations could already have access to these dimensions. You need to hear his fascinating theory: “Think about living on the surface of a balloon.” “That is two dimensional.” “You might not be aware that there is a third dimension because you are just living on the surface of that balloon.” “If there is another being that is capable of taking advantage of the third dimension, then that being will cross the distance between two points on the surface of the balloon faster than you can imagine.” “Because the travel between the two points can go through the third dimension that connects the two points—not necessarily on the curved surface of the balloon.” “So there are, in principle, possibilities of navigating in more than the dimensions that we are familiar with.” “We are familiar with three spatial dimensions plus time.” “If there are more than three and there is a technological way of taking advantage of those … objects will appear and disappear in ways that we cannot understand.” “Einstein’s theory of relativity states that no material object can move faster than light.” “However, if there are extra dimensions, you might actually travel faster than light in the three dimensions, even though you’re traveling less than the speed of light in the extra dimensions.”

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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. Out now on all platforms. ❤️👊🏾

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