Do electrons exist?

[bennyboy]

Quantum entanglement is the baseline in quantum models, but doesn't mean what people think it does and isn't "the observer effect", which is what you commented on.  The observer effect doesnt work because of quantum entaglement, even if all things are entangled.  It "works" for other...entirely less (more accurately "more") than quantum reasons.

No, but the quantum eraser effect very much works for that reason, which is what the original video was about.  In that case, the particular observer effect is peculiar to quantum mechanics. The live experiment I linked also shows and explains that.

Here, let me do your move:

https://en.wikipedia.org/wiki/Quantum_eraser_experiment

There ya go. Now, be a good dude and go back and check the title of the linked video.