first of all im from israel so im sorry for the bad english :P ok.. in the duble slit expreminet when u open 2 slits the elctron go through them both.. and u place a measure device it shows that the electron go only through 1 slit.. but lets take a camera that films through which slit the electron go's... and u take the tape and send it to a person that located far away from there,, and the electron gun still shoots electrons, and the viewer that is far away wachtes the tape, do the function collapse? and suddenly the result changes? and the electron that is located far away knows that is been watched and change is course to go through only 1 slit? (and if it dose I think that u have a potential to measure how fast information travels). yours Nadav from israel.