18 | Clifford Johnson on What's So Great About Superstring Theory

18 | Clifford Johnson on What's So Great About Superstring Theory

String theory is a speculative and highly technical proposal for uniting the known forces of nature, including gravity, under a single quantum-mechanical framework. This doesn't seem like a recipe for creating a lightning rod of controversy, but somehow string theory has become just that. To get to the bottom of why anyone (indeed, a substantial majority of experts in the field) would think that replacing particles with little loops of string was a promising way forward for theoretical physics, I spoke with expert string theorist Clifford Johnson. We talk about the road string theory has taken from a tentative proposal dealing with the strong interactions, through a number of revolutions, to the point it's at today. Also, where all those extra dimensions might have gone. At the end we touch on Clifford's latest project, a graphic novel that he wrote and illustrated about how science is done. Clifford Johnson is a Professor of Physics at the University of Southern California. He received his Ph.D. in mathematics and physics from the University of Southampton. His research area is theoretical physics, focusing on string theory and quantum field theory. He was awarded the Maxwell Medal from the Institute of Physics. Johnson is the author of the technical monograph D-Branes, as well as the graphic novel The Dialogues. Home page Wikipedia page Publications A talk on The Dialogues Asymptotia blog Twitter

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170 | Priya Natarajan on Galaxies, Black Holes, and Cosmic Anomalies

170 | Priya Natarajan on Galaxies, Black Holes, and Cosmic Anomalies

There is so much we don't know about our universe. But our curiosity about the unknown shouldn't blind us to the incredible progress we have made in cosmology over the last century. We know the univer...

25 Loka 20211h 27min

169 | C. Thi Nguyen on Games, Art, Values, and Agency

169 | C. Thi Nguyen on Games, Art, Values, and Agency

Games are everywhere, but why exactly do we play them? It seems counterintuitive, to artificially invent goals and obstacles just so we can struggle to achieve them. (And in some games, like Twister, ...

18 Loka 20211h 24min

AMA | October 2021

AMA | October 2021

Welcome to the October 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of que...

14 Loka 20212h 59min

168 | Anil Seth on Emergence, Information, and Consciousness

168 | Anil Seth on Emergence, Information, and Consciousness

Those of us who think that that the laws of physics underlying everyday life are completely known tend to also think that consciousness is an emergent phenomenon that must be compatible with those law...

11 Loka 20211h 25min

167 | Chiara Marletto on Constructor Theory, Physics, and Possibility

167 | Chiara Marletto on Constructor Theory, Physics, and Possibility

Traditional physics works within the "Laplacian paradigm": you give me the state of the universe (or some closed system), some equations of motion, then I use those equations to evolve the system thro...

4 Loka 20211h 35min

166 | Betül Kaçar on Paleogenomics and Ancient Life

166 | Betül Kaçar on Paleogenomics and Ancient Life

In the question to understand the biology of life, we are (so far) limited to what happened here on Earth. That includes the diversity of biological organisms today, but also its entire past history. ...

27 Syys 20211h 14min

165 | Kathryn Paige Harden on Genetics, Luck, and Fairness

165 | Kathryn Paige Harden on Genetics, Luck, and Fairness

It's pretty clear that our genes affect, though they don't completely determine, who we grow up to be; children's physical and mental characteristics are not completely unrelated to those of their par...

20 Syys 20211h 25min

AMA | September 2021

AMA | September 2021

Welcome to the September 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of q...

16 Syys 20213h 38min

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