Again, this is not as if the electron is “aware” of the two slits, but rather, two slits guaranteeing a diminishing of the particle’s wave function. The mystery boils down to us not knowing what it is in multiple slits that causes the wave function to diminish, yes?
The EPR Paradox, and confirming experimental data, suggest otherwise.
Personally, I do not subscribe to the Copenhagan Interpretation or the Many Worlds Theory.
I suspect that there is a residual connectedness of all energy (and remember, all matter is merely a manifestation of energy) from the Creation, and that this connectedness stands outside of and apart from our conception of time. And I am not convinced that there is a speed limit “c” of electromagnetic propagation that has always been constant, as claimed by most physicists.