Quantum Mechanics, Onions, and a Theory of Everything | Astrophysicist Lawrence Krauss| Big Think скачать в хорошем качестве

Quantum Mechanics, Onions, and a Theory of Everything | Astrophysicist Lawrence Krauss| Big Think

Quantum Mechanics, Onions, and a Theory of Everything Watch the newest video from Big Think: https://bigth.ink/NewVideo Join Big Think Edge for exclusive videos: https://bigth.ink/Edge ---------------------------------------------------------------------------------- Will we ever have a Theory of Everything? Theoretical physicist Lawrence Krauss isn't sure that's the right question to be asking.It’s no surprise that understanding highly abstract mathematics can be challenging, says theoretical physicist Lawrence Krauss. The organ of your body that does the understanding — the brain — is like the organ that does the waste processing — the kidney. Both are products of millions of years of evolution, and neither will change overnight. The type of thinking that helped us survive on the African savannas doesn’t help us grasp quantum mechanics. We should expect to not understand everything about the universe, and to keep asking questions… Lawrence Krauss' most recent book is The Greatest Story Ever Told -- So Far: Why Are We Here?. ---------------------------------------------------------------------------------- LAWRENCE M. KRAUSS : Lawrence Maxwell Krauss is a Canadian-American theoretical physicist who is a professor of physics, and the author of several bestselling books, including The Physics of Star Trek and A Universe from Nothing. He is an advocate of scientific skepticism, science education, and the science of morality. Krauss is one of the few living physicists referred to by Scientific American as a "public intellectual", and he is the only physicist to have received awards from all three major U.S. physics societies: the American Physical Society, the American Association of Physics Teachers, and the American Institute of Physics. ---------------------------------------------------------------------------------- TRANSCRIPT: Lawrence Krauss: Well, common sense is useful for certain things. And of course from an evolutionary perspective common sense arose to stop us from being eaten by lions on the Savannah, but not to understand quantum mechanics. There's no sense in which our brains, the early evolution of our brains, needed to know anything about quantum mechanics or relativity. And what's amazing is that nevertheless those brains that arose to solve human problems on everyday scales have allowed us to explore the universe on scales that are quite different. And scales where everything that we think is sensible goes away, on quantum mechanical scales where particles can be doing many things at the same time or when you're moving very fast and your perception of time can change compared to mine. And what we've learned, of course, using those principles going beyond common sense is that the universe, our myopic views of the universe are just that they're myopic, that the universe at it's fundamental scales look quite different. And in fact I begin my new book with one of my favorite allegories: Plato's allegory of the cave, where he likens our existence to people trapped in a cave, being forced to look at the shadows of reality from the light cast behind them on a wall. And he said the job of a scientist essentially is to interpret those shadows to understand the reality underneath. And when we look at the universe around us we're seeing the shadows of reality. And what we've been able to do is peer underneath to discover the real world, which is really quite different. And, just as for those individuals, their common sense would tell them that the world is two dimensional because all they see is the projection of reality, we, for us our common sense tells us that the world is three dimensional, but we've learned in fact that the universe isn’t; it's at least four-dimensional; the three dimensions of space and one dimension of time that are tied together yielding a reality at its basis, which is really quite different from that which we experience. That's just one example of the many ways we've been able to dive down underneath this fabric that's shielding the real world underneath. And the fabric is what perhaps our common sense is based to understand, and what's underneath—it's not too surprising that it doesn't seem sensible, because it describes realms of the universe that we literally did not evolve to originally understand. And as I say it's an amazingly fortuitous accident that our brains evolved so we could understand those regions as well. The question arises, naturally, once we understand at a fundamental level that the universe looks quite different than we perceive it to be: Whether what we're now discovering is truly fundamental or whether we dive down deeper and the universe will look different still? For the full transcript, check out https://bigthink.com/videos/lawrence-...