158 | David Wallace on the Arrow of Time

The arrow of time — all the ways in which the past differs from the future — is a fascinating subject because it connects everyday phenomena (memory, aging, cause and effect) to deep questions in physics and philosophy. At its heart is the fact that entropy increases over time, which in turn can be traced to special conditions in the early universe. David Wallace is one of the world's leading philosophers working on the foundations of physics, including space and time as well as quantum mechanics. We talk about how increasing entropy gives rise to the arrow of time, and what it is about the early universe that makes this happen. Then we cannot help but connecting this story to features of the Many-Worlds (Everett) interpretation of quantum mechanics.

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David Wallace received a D.Phil. in Physics and a D.Phil. in Philosophy from Oxford University. He is currently W.A. Mellon Professor of Philosophy of Science, with joint appointments in the Philosophy Department and the Department of History and Philosophy of Science, at the University of Pittsburgh. He is the author of The Emergent Multiverse: Quantum Theory According to the Everett Interpretation. Among his honors are the Lakatos Award for outstanding contribution to the philosophy of science. His most recent book is Philosophy of Physics: A Very Short Introduction.


Jaksot(415)

14 | Alta Charo on Bioethics and the Law

14 | Alta Charo on Bioethics and the Law

To paraphrase Ian Malcolm in Jurassic Park, scientists tend to focus on whether they can do something, not whether they should. Questions of what we should do tend to wander away from the pristine bea...

8 Syys 20181h 8min

13 | Neha Narula on Blockchain, Cryptocurrency, and the Future of the Internet

13 | Neha Narula on Blockchain, Cryptocurrency, and the Future of the Internet

For something of such obvious importance, money is kind of mysterious. It can, as Homer Simpson once memorably noted, be exchanged for goods and services. But who decides exactly how many goods/servic...

8 Syys 20181h 6min

12 | Wynton Marsalis on Jazz, Time, and America

12 | Wynton Marsalis on Jazz, Time, and America

Jazz occupies a special place in the American cultural landscape. It's played in elegant concert halls and run-down bars, and can feature esoteric harmonic experimentation or good old-fashioned foot-s...

4 Syys 20181h 1min

11 | Mike Brown on Killing Pluto and Replacing It with Planet 9

11 | Mike Brown on Killing Pluto and Replacing It with Planet 9

Few events in recent astronomical history have had the worldwide emotional resonance as the 2006 announcement that Pluto was no longer considered a planet, at least as far as the International Astrono...

27 Elo 20181h 17min

10 | Megan Rosenbloom on the Death Positive Movement

10 | Megan Rosenbloom on the Death Positive Movement

We're all going to die. But while we are alive, it's up to us how we understand and deal with that fact. In the United States especially, there is a tendency to not face up to the reality of death, an...

20 Elo 20181h 9min

9 | Solo -- Why Is There Something Rather than Nothing?

9 | Solo -- Why Is There Something Rather than Nothing?

It's fun to be in the exciting, chaotic, youthful days of the podcast, when anything goes and experimentation is the order of the day. So today's show is something different: a solo effort, featuring ...

13 Elo 20181h 21min

8 | Carl Zimmer on Heredity, DNA, and Editing Genes

8 | Carl Zimmer on Heredity, DNA, and Editing Genes

Our understanding of heredity and genetics is improving at blinding speed. It was only in the year 2000 that scientists obtained the first rough map of the human genome: 3 billion base pairs of DNA wi...

6 Elo 20181h 31min

7 | Yascha Mounk on Threats to Liberal Democracy

7 | Yascha Mounk on Threats to Liberal Democracy

Both words in the phrase "liberal democracy" carry meaning, and both concepts are under attack around the world. "Democracy" means that they people rule, while "liberal" (in this sense) means that the...

30 Heinä 20181h 5min

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