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.

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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

Jaksot(416)

108 | Carl Bergstrom on Information, Disinformation, and Bullshit

108 | Carl Bergstrom on Information, Disinformation, and Bullshit

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107 | Russ Shafer-Landau on the Reality of Morality

107 | Russ Shafer-Landau on the Reality of Morality

Despite occasional and important disagreements, most people are in rough agreement about what it means to be moral, to do the right thing. There's much less agreement about why we should be moral, or ...

27 Heinä 20201h 30min

106 | Stuart Bartlett on What "Life" Means

106 | Stuart Bartlett on What "Life" Means

Someday, most likely, we will encounter life that is not as we know it. We might find it elsewhere in the universe, we might find it right here on Earth, or we might make it ourselves in a lab. Will w...

20 Heinä 20201h 25min

105 | Ann-Sophie Barwich on the Science and Philosophy of Smell

105 | Ann-Sophie Barwich on the Science and Philosophy of Smell

We gather empirical evidence about the nature of the world through our senses, and use that evidence to construct an image of the world in our minds. But not all senses are created equal; in practice,...

13 Heinä 20201h 17min

104 | David Rosen and Scott Miles on the Neuroscience of Music and Creativity

104 | David Rosen and Scott Miles on the Neuroscience of Music and Creativity

Creativity is one of those things that we all admire but struggle to define or make concrete. Music provides a useful laboratory in which to examine what creativity is all about — how do people become...

6 Heinä 20201h 26min

103 | J. Kenji López-Alt on Cooking As and With Science

103 | J. Kenji López-Alt on Cooking As and With Science

Cooking is art, but it's also very much science — mostly chemistry, but with important contributions from physics and biology. (Almost like a well-balanced recipe…) And I can't think of anyone better ...

29 Kesä 20201h 15min

102 | Maria Konnikova on Poker, Psychology, and Reason

102 | Maria Konnikova on Poker, Psychology, and Reason

The best chess and Go players in the world aren't human beings any more; they're artificially-intelligent computer programs. But the best poker players are still humans. Poker is a laboratory for unde...

22 Kesä 20201h 20min

101 | David Baltimore on the Mysteries of Viruses

101 | David Baltimore on the Mysteries of Viruses

I recently saw an estimate that if you took all the novel coronaviruses in the world (the actual viruses, not patients), you could fit them into a bucket no more than a couple of liters in volume. A h...

15 Kesä 20201h 14min

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