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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333 | Gordon Pennycook on Unthinkingness, Conspiracies, and What to Do About Them

333 | Gordon Pennycook on Unthinkingness, Conspiracies, and What to Do About Them

Why are people wrong all the time, anyway? Is it because we human beings are too good at being irrational, using our biases and motivated reasoning to convince ourselves of something that isn't quite ...

27 Loka 20251h 10min

332 | Dmitri Tymoczko on the Mathematics Behind Music

332 | Dmitri Tymoczko on the Mathematics Behind Music

Music is math that you can dance to. The fact that certain notes sound good when played together, or in succession, is related to the mathematical properties of the frequencies to which they correspon...

20 Loka 20251h 21min

AMA | October 2025

AMA | October 2025

Welcome to the October 2025 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 Pat...

13 Loka 20253h 37min

331 | Solo: Fine-Tuning, God, and the Multiverse

331 | Solo: Fine-Tuning, God, and the Multiverse

Certain features of our universe seem unnatural to us. These include "constants of nature" such as the cosmological constant and the mass of the Higgs boson, as well as features of the initial conditi...

6 Loka 20251h 54min

330 | Petter Törnberg on the Dynamics of (Mis)Information

330 | Petter Törnberg on the Dynamics of (Mis)Information

A characteristic of complex systems is that individual components combine to exhibit large-scale emergent behavior even when the components were not specifically designed for any particular purpose wi...

29 Syys 20251h 12min

329 | Steven Pinker on Rationality and Common Knowledge

329 | Steven Pinker on Rationality and Common Knowledge

Getting along in society requires that we mostly adhere to certainly shared norms and customs. Often it's not enough that we all know what the rules are, but also that everyone else knows the rules, a...

22 Syys 20251h 16min

328 | Mary Roach on Replacing Parts of Our Bodies

328 | Mary Roach on Replacing Parts of Our Bodies

Like any machine, bodies occasionally break down, and it's natural to go in search of a replacement part. Ancient societies featured simple prosthetics for teeth, noses, and limbs, while modern medici...

15 Syys 20251h 7min

AMA | September 2025

AMA | September 2025

Welcome to the September 2025 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 P...

8 Syys 20253h 30min

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