Hi guys, I am new to this site and would like to say a little about the double slit experiment. I find the fact that the electrons or photons choose both paths unless being watched absolutely amazing. But what I find even more amazing to me is this: The electrons, when fired at the screen one at a time, gradually fill out an interference pattern. To make myself clearer I will simplify things. Let's say the interference pattern consists of four vertical lines, each line consisting of four electrons stacked vertically. How on earth does each electron know where to end up? They all go into the correct place. Take the last one for example. Eleven slots are taken up, leaving only one place left to fill out the interference pattern. And when it is fired it goes to the correct space! I find it amazing they fill out an interference pattern in the first place, but to each go to a seperate area and gradually make up the pattern like a jigsaw astounds me. I am not incredibly educated about this subject, so could anyone tell me if what I say is wrong. Thanks for reading this, Kev.