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 […]
Is Quantum Theory About Reality or What We Know?
Does the quantum state ultimately represent some objective aspect of reality, or is it a way of characterizing something about us, namely, something about what some person knows about reality?Photograph by Ben Scholzen / Flickr Physicists know how to use quantum theory—your phone and computer give plenty of evidence of that. But knowing how to […]
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 […]