Even more macroscopic now: https://www.nature.com/articles/d41586-021-01223-4 https://www.nature.com/articles/d41586-021-01223-4 Eraser experiments have alread

Even more macroscopic now: https://www.nature.com/articles/d41586-021-01223-4 https://www.nature.com/articles/d41586-021-01223-4 Eraser experiments have already shown that collapse either doesn't actually happen or is reversible. It appears that all observables are just lazily evaluated nested expressions. Collapse/decoherence is just the phenomena of simplification of expressions. The expressions don't change. In the quantum eraser experiment, the erasure causes the expression to no longer be simplifiable. https://en.wikipedia.org/wiki/Delayed-choice_quantum_eraser https://en.wikipedia.org/wiki/Delayed-choice_quantum_eraser