" == Virtual Pin Holes == In case it is not obvious how Afshar's results can still be obtained if, everything else being equal, we were permitted to respecify the upstream constraints, the following is an example. 1. Remove the pinhole construction. 2. Leave everything else as is, including Afshar's results. 3. Place pin size obstacles at those locations formerly occupied by the pinholes. 4. Place adjacent to such (at least a few pinhole widths away) a hologram of the pinholes. 5. Project laser light through the apparatus. If properly constructed the downstream data will be the same as Afshar's. Yet a ""which way"" inference
" == Virtual Pin Holes == In case it is not obvious how Afshar's results can still be obtained if, everything else being equal, we were permitted to respecify the upstream constraints, the following is an example. 1. Remove the pinhole construction. 2. Leave everything else as is, including Afshar's results. 3. Place pin size obstacles at those locations formerly occupied by the pinholes. 4. Place adjacent to such (at least a few pinhole widths away) a hologram of the pinholes. 5. Project laser light through the apparatus. If properly constructed the downstream data will be the same as Afshar's. Yet a ""which way"" inference is