Dare I say it, and the only reason I brought it up, is that.... When I was about 17 or so, for about a year, so freinds and I hung out on a street corner. At the end of the block was a street light that lit ONLY when you walked under it! No photo cell, no motion detector. But we were always in view of it, and knew that it would only light when someone was near it. So it's not a "If a tree falls in the woods...." thing. As if by walking by changed some element of potential allow the light to kick on.
"Well - I oughta....." -Jackie Gleason