Reposting (Delayed Choice Experiment)

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Haste made waste (I managed to get it precisely backwards, sorry. Corrected below. And please, somebody, clue me in here :confused:
...

Hello,

I'm uncomfortable with the usual description of this experiment and wonder if this is justified. In a nutshell, when (in the usual double-slit setup) detectors are placed between the barrier and the final screen -- such that an electron, say, has already move past the two-slits -- NO interference pattern will form as though the detection had been made earlier, resulting in the observation of particles instead of waves. It is then suggested that the electron knows it was watched and adjusts its behavior in the past to conform accordingly.

Here's my problem with this ...

Electrons travel at the speed of light where time either does not exist at all, or perhaps simply stops (I recall reading it being the former .. is this correct, btw??). Regardless ... although from our perspective the electron most certainly crossed the barrier before it reached the detector beyond, from the electron's point of view no time elapsed at all; hence, there was no delay to speak of.

Am I missing something?

thanks!
 

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