Tag Archives: Sean Carroll

Dark energy and repulsive gravity

Over the weekend, Sean Carroll put up a blog post to address common misconceptions about cosmology.  I understood most of his points, but was confused when I saw this one: Dark energy is not a new force; it’s a new substance. … Continue reading

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Sean Carroll on the Many Worlds Interpretation of quantum mechanics

Related to the post last week on quantum mechanics, here is a talk that got mentioned in the discussion thread.  Warning: Carroll is a passionate advocate for the Many Worlds Interpretation, so don’t expect a fair and balanced discussion.  The … Continue reading

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What do you think about machines that think?

The Edge question for this year was, “What do you think about machines that think?”  There are a lot of good responses, and some predictably inane ones.  Daniel Dennett gives a good write up on why the Singularity is overblown, … Continue reading

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Does the Higgs boson actually exist?

I have to admit to wondering the same thing Nick talks about here.  Do any of these subatomic particles actually exist?  At least in the way we conventionally define “exist”?  We’re talking about entities that are sometimes a wave, sometimes … Continue reading

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Sean Carroll makes the case for the Many-worlds interpretation of quantum mechanics

Sean Carroll has posted a passionate defense of the Many-world interpretation to quantum mechanics. I have often talked about the Many-Worlds or Everett approach to quantum mechanics — here’s an explanatory video, an excerpt from From Eternity to Here, and slides from a talk. But I don’t think I’ve ever … Continue reading

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Sean Carroll defends philosophy

Sean Carroll, theoretical physicist, has a post up on his blog telling his fellow physicists to “stop saying silly things about philosophy”. The last few years have seen a number of prominent scientists step up to microphones and belittle the … Continue reading

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Quantum twist could kill off the multiverse, and Boltzmann brains

THE multiverse is dead, long live the multiverse. A radical new way of looking at quantum mechanics suggests that even the multiverse will come to an end. A popular view of the multiverse says that our universe is just one … Continue reading

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Max Tegmark posts his chapter on cosmic inflation online

If you enjoyed my write up on Tegmark’s Level II multiverse, you might enjoy this guest post that he makes on Sean Carroll’s blog, which includes a link to the chapter on inflation from his book, including those visual aids … Continue reading

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Science and naturalism

Sean Carroll has an interesting piece at The Stone on the New York Times site, pointing out that the theory of cosmic inflation was motivated by naturalism.  In other words, it was motivated by the desire to find a natural explanation … Continue reading

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Falsifiability is useful, but a matter of judgment

Our discussions last week on Jim Baggott’s book, ‘Farewell to Reality’, and Sean Carroll’s Edge response, left me pondering falsifiability, the idea that theories should be falsifiable in order to be considered science. Falsifiability is a criteria identified by the … Continue reading

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