My local multi-deli has pizza, felafel, philly cheese steaks, salads, juice, etc..., and every day they have all this stuff in the window, on plates covered with sweaty plastic wrap so passers-by can examine the offerings.
Somebody takes the time to arrange the wilting garnishes on each plate, and the results look kind of touching, if not particularly tempting.
Does the deli chef prepare the display anew every morning? Is there some special fast food science to making a model open-faced philly sandwich that'll keep its not-so-good looks through a whole day in the spotlight? And does someone finally eat them?