quantum theory

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    The Quantum Theory That Peels Away the Mystery of Measurement

    Reprinted with permission from Quanta Magazine’s Abstractions blog. Imagine if all our scientific theories and models told us only about averages: if the best weather forecasts could only give you the average daily amount of rain expected over the next month, or if astronomers could only predict the average time between solar eclipses. In the early days of quantum […]

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    Is Quantum Theory About Reality or What We Know?

    Physicists know how to use quantum theory—your phone and computer give plenty of evidence of that. But knowing how to use it is a far cry from fully understanding the world the theory describes—or even what the various mathematical devices scientists use in the theory are supposed to mean. One such mathematical object, whose status […]

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    Can Many-Worlds Theory Rescue Us From Boltzmann Brains?

    Boltzmann’s theory leads to a paradox, where the very scientific assumption that we can trust what we observe leads to the conclusion that we can’t trust what we observe.Image by Chaosophia218 / Tumblr Can you trust the world to be consistent? Scientists don’t have much choice. They need to assume that objective observations of the universe […]

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    Infinite Garbage Can

    Can information ever be rescued from inside a black hole?