hi, i'm new to this forum and mainly because i have some questions regarding a book i am reading. Brian Greene's The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory mainly he explains the view that Feynman have on the double slit experiment as shown on the picture Feynman is saying that every electrons use all the "roads" possible including going to Andromeda and coming back to go through slit A." the electrons taste every trajectories possible from its start until it gets to the final detector on the other side of the double slits planel. ok every body know that if we put a detector in one or two of the slits the interference disappear. my question is what if we put detectors around the experiment except in front of the experiment (the panel and the 2 slits) will they stop interefering too ? Brian Greene explains more on Feynman's view but i'm not gonna translate more since i'm pretty sure the ones answering here already know Also i'm not finished yet with the book but he tries to defend the superstring theory in that book, he's saying that this experiment is the core of quantum mechanics but doesnt explain the results with the superstring theory...anyone ? by the way i'm french canadian so english is only my second language.