Hollywood agents and film studios are often looking for the Next Big Thing with regards to screenplays and each year they're flooded with unwanted manuscripts that never see the light of day, much less 1 dollar of production funds. Film studios, production companies as well as talent firms all employ younger people directly out of college or with minor industry experience in jobs they call "Readers". All of these Readers check out huge heaps of solicited material daily and attempt to select the gems in the stack. A needle inside a haystack is an appropriate metaphor for these submissions.