Amazon’s new sci-fi series “Tales From the Loop” is a pretty difficult show to describe, even for its creator, Nathaniel Halpern, who also struggles with the idea of labeling it a sci-fi series at all.Amazon’s new sci-fi series “Tales From the Loop” is a pretty difficult show to describe, even for its creator, Nathaniel Halpern, who also struggles with the idea of labeling it a sci-fi series at all.