For years enigmatic writer-director Shane Carruth, the genius behind Primer and Upstream Color, was working on a project called A Topiary. Like all of his projects, it was ambitious and hard to define, a wild science fiction project that, according to a 2013 Wired report, was split into two parts – the first followed a city worker who becomes obsessed with a starburst pattern he starts seeing in everything and the other concerned a group of children who uncover a material they use to build animal-like robots. You know. That old song. While Carruth was forced to abandon the …