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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208 | Rick Beato on the Theory of Popular Music

208 | Rick Beato on the Theory of Popular Music

There is no human endeavor that does not have a theory of it — a set of ideas about what makes it work and how to do it well. Music is no exception, popular music included — there are reasons why cert...

22 Elo 20221h 11min

207 | William MacAskill on Maximizing Good in the Present and Future

207 | William MacAskill on Maximizing Good in the Present and Future

It's always a little humbling to think about what affects your words and actions might have on other people, not only right now but potentially well into the future. Now take that humble feeling and p...

15 Elo 20221h 42min

206 | Simon Conway Morris on Evolution, Convergence, and Theism

206 | Simon Conway Morris on Evolution, Convergence, and Theism

Evolution by natural selection is one of the rare scientific theories that resonates within the wider culture as much as it does within science. But as much as people know about evolution, we also fin...

8 Elo 20221h 17min

AMA | August 2022

AMA | August 2022

Welcome to the August 2022 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patr...

1 Elo 20223h 6min

205 | John Quiggin on Interest Rates and the Information Economy

205 | John Quiggin on Interest Rates and the Information Economy

The idea of an "interest rate" might seem mundane and practical, in comparison to our usual topics around here, but there is a profound philosophical idea lurking in the background: if you lend me mon...

25 Heinä 20221h 19min

204 | John Asher Johnson on Hunting for Exoplanets

204 | John Asher Johnson on Hunting for Exoplanets

Recent years have seen a revolution in the study of exoplanets, planets that orbit stars other than the Sun (or don't orbit stars at all). After a few tentative detections in the 1990s, dedicated inst...

18 Heinä 20221h 15min

203 | N.J. Enfield on Why Language is Good for Lawyers and Not Scientists

203 | N.J. Enfield on Why Language is Good for Lawyers and Not Scientists

We describe the world using language — we can't help it. And we all know that ordinary language is an imperfect way of communicating rigorous scientific statements, but sometimes it's the best we can ...

11 Heinä 20221h 24min

AMA | July 2022

AMA | July 2022

Welcome to the July 2022 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 questi...

4 Heinä 20223h 26min

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