  An experiment is presented in which the alleged progression of a photon's
wave function is ``measured'' by a row of superposed atoms. The photon's wave
function affects only one out of the atoms, regardless of its position within
the row, thereby manifesting not only non-local but also non-sequential
characteristics. It also turns out that, out of n atoms, each one has a
probability which is higher than the normal 1/n to be the single affected one.
