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 […]
How Big Can Schrödinger’s Kittens Get?
Scientists are slowly scaling up quantum effects from atomic to human size.
The Quantum Mechanics of Fate
How time travel might explain some of science’s biggest puzzles.
The Rise of the Uncertain
Uncertainty in physics has gone from black sheep to overachiever.