124 | Solo: How Time Travel Could and Should Work

124 | Solo: How Time Travel Could and Should Work

Time! It doesn't stop, psychological effects of being under lockdown notwithstanding. How we experience time depends on our situation, but time itself just marches forward. Unless, of course, it's possible to travel to the past, as countless science-fiction scenarios have depicted. But does that really make sense? Couldn't we then change the past, even so dramatically that our own existence would never have happened? In this solo podcast I talk about both the physics and fiction of time travel. I point out that it might be allowed by the laws of physics, and explain how that would work, but that we really don't know. And I try to make sense of some of the less-sensible depictions of cinematic time travel. Coming up with a logical theory that could account for Back to the Future isn't easy, but podcasting isn't for the squeamish.

Support Mindscape on Patreon.

But wait, there's more! I was contacted by Janna Levin, who we fondly remember from Episode 27. Janna moonlights as Chair and Director of Sciences at Pioneer Works, an institution dedicated to bringing together creative people in art and science. Like the rest of us, they've been looking for ways to offer more online content in these pandemic times, so we thought about ways to collaborate. Here's what they came up with: artist Azikiwe Mohammed has created an animated video backdrop to this podcast episode. The visuals are trippy, colorful, and inspired by (without trying to directly illustrate) what I talk about in the episode. You can check out a brief write-up at the Pioneer Works site, or view the video directly below.

https://www.youtube.com/watch?v=kHy1j4LiyGQ

Avsnitt(419)

263 | Chris Quigg on Symmetry and the Birth of the Standard Model

263 | Chris Quigg on Symmetry and the Birth of the Standard Model

Einstein's theory of general relativity is distinguished by its singular simplicity and beauty. The Standard Model of Particle Physics, by contrast, is a bit of a mess. So many particles and interacti...

22 Jan 20241h 26min

262 | Eric Schwitzgebel on the Weirdness of the World

262 | Eric Schwitzgebel on the Weirdness of the World

Scientists and philosophers sometimes advocate pretty outrageous-sounding ideas about the fundamental nature of reality. (Arguably I have been guilty of this.) It shouldn't be surprising that reality,...

15 Jan 20241h 20min

261 | Sanjana Curtis on the Origins of the Elements

261 | Sanjana Curtis on the Origins of the Elements

In mid-20th-century cosmology, there was a debate over the origin of the chemical elements. Some thought that they could be produced in the Big Bang, while others argued that they were made inside sta...

8 Jan 20241h 7min

260 | Ricard Solé on the Space of Cognitions

260 | Ricard Solé on the Space of Cognitions

Octopuses, artificial intelligence, and advanced alien civilizations: for many reasons, it's interesting to contemplate ways of thinking other than whatever it is we humans do. How should we think abo...

1 Jan 20241h 10min

Holiday Message: Reflections on Immortality

Holiday Message: Reflections on Immortality

The final Mindscape podcast of each year is devoted to a short, reflective Holiday Message. This year the theme is Immortality: whether it's an attractive idea, and whether the laws of physics and cos...

18 Dec 202355min

259 | Adam Frank on What Aliens Might Be Like

259 | Adam Frank on What Aliens Might Be Like

It wasn't that long ago that topics like the nature of consciousness, or the foundations of quantum mechanics, or prospects for extraterrestrial life were considered fringey and disreputable by much o...

11 Dec 20231h 18min

AMA | December 2023

AMA | December 2023

Welcome to the December 2023 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 Pa...

4 Dec 20233h 36min

258 | Solo: AI Thinks Different

258 | Solo: AI Thinks Different

The Artificial Intelligence landscape is changing with remarkable speed these days, and the capability of Large Language Models in particular has led to speculation (and hope, and fear) that we could ...

27 Nov 20231h 20min

Populärt inom Vetenskap

dumma-manniskor
p3-dystopia
svd-nyhetsartiklar
kapitalet-en-podd-om-ekonomi
allt-du-velat-veta
rss-ufo-bortom-rimligt-tvivel-2
rss-vetenskapsradion-2
rss-vetenskapsradion
det-morka-psyket
sexet
doden-hjarnan-kemisten
rss-spraket
rss-odla
paranormalt-med-caroline-giertz
dumforklarat
rss-experimentet
medicinvetarna
vetenskapsradion
rss-geopodden-2
bildningspodden