What I love is how it perfectly fulfills what I've always considered the typical parameters of most poly relationships: One person (Dan) as the fulcrum between two people (Laurie, Rorschach) who wouldn't normally want anything to do with each other...but, in the best-case scenario, can come to appreciate each other anyhow (mainly for/through the affection they both share for fulcrum-person). It's like math, except with sex!