The short story “Story of your life” (that the movie Arrival is based on) uses this as a pseudo-argument for how the aliens could have a non-temporal understanding of reality.

What do you call an explanation? An interpretation of QM? There are dozens but none are especially satisfying..

As for the 'delayed choices' IMHO it is a poor interpretation of the data: see https://www.youtube.com/watch?v=RQv5CVELG3U for example.

- The double slit experiment’s conclusions still hold, but:

- The particularly exciting and stark results of the Quantum Erasure experiment may have been misinterpreted or miscommunicated to the public, in particular:

- The presenter of PBS SpaceTime has said that he regrets certain things about how he worded his video on the Quantum Erasure experiment, and I think may have left a comment on the video to that effect.

Every time I look into QM, I keep coming back to the same fundamental axiom: “Quantum Mechanics’ weirdnesses can make otherwise straightforward things frustrating, but will never make interesting inventions possible.” Like how entanglement is able to break locality (which is frustrating) but without breaking causality (which would be interesting). If you hear about a quantum principle and think “Wow, I could use that to build X,” then it’s more likely that you’re not fully understanding the principle (not “you” specifically, I’ve fallen for this myself countless times).

The only exception seems to be Quantum Computing, but even that only arises out of a deep deep mathematical analysis (you can’t get to QC on your own from the things in popular science books) and is only applicable to really niche applications.

This video blew my mind wide open about the double slit experiment by showing the simpler case, the single slit experiment, and I think it clears up a LOT! Sadly, I can't do the explanation any justice

Why Delayed Choice Experiments do NOT imply Retrocausality

David Ellerman

University of California/Riverside

October 16, 2014

There is a fallacy that is often involved in the interpretation of quantum experiments involving a certain type of separation such as the: double-slit experiments, which-way interferometer experiments, polarization analyzer experiments, Stern-Gerlach experiments, and quantum eraser experiments. The fallacy leads not only to áawed textbook accounts of these experiments but to flawed inferences about retrocausality in the context of delayed choice versions of separation experiments.

Measurement here might be better understood to "filter out" any parts of the wave that don't agree with the measurement. So a precise measurement will project out a lot of the wave, giving you something more localized and particle-like. A fuzzy measurement will project out only a bit of the wave, giving you something that's still spread out and quantum and wave-like.