One of George Romero's more beloved creations is Bub from Day of the Dead. Smart enough to learn a few basic tasks, and to grow emotionally attached to the scientist who's teaching him. The earliest materials we have for Day of the Dead were produced all the way back in 1979, when Dawn was still in theaters. That document, a very short synopsis, was likely written to secure the deal that would fund his next three films: Knightriders, Creepshow, and Day. The first longer draft comes from 1982, and it's very different from the finished film.