The central mystery of quantum mechanics is that small chunks of matter sometimes seem to behave like particles, sometimes like waves. For most of the past century, the prevailing explanation of this conundrum has been what’s called the “Copenhagen interpretation”—which holds that, in some sense, a single particle really is a wave, smeared out across the universe, that collapses into a determinate location only when observed.

But some founders of —notably Louis de Broglie—championed an alternative interpretation, known as “pilot-wave theory,” which posits that quantum particles are borne along on some type of wave. According to pilot-wave theory, the particles have definite trajectories, but because of the pilot wave’s influence, they still exhibit wavelike statistics.

John Bush, a professor of applied mathematics at MIT, believes that pilot-wave theory deserves a second look. That’s because Yves Couder, Emmanuel Fort, and colleagues at the University of Paris Diderot have recently discovered a macroscopic pilot-wave system whose statistical behavior, in certain circumstances, recalls that of quantum systems.

If these ideas pan out, it could significantly change what I learned about quantum mechanics 50 years ago.  I won’t comment further until Terry Steiner has a chance to throw his 2 cents worth in.

Interestingly I first read an article that was almost word for word the same as the above article, but had a few turns of phrase that seemed rather bizarre.  That article,  Math Proposed Substitute to Quantum Tenet, was in Capital Wired and written by Rasim van Nierop.  I posted a comment on the article asking whether this version was plagiarized from the one above, or was it vice versa.