"Thesis" is a melancholic and introspective song by Keaton Henson. The song expresses the pain and emptiness that comes with the end of a relationship and the struggle to find meaning and purpose in the aftermath. The first verse describes the couple's attempt to alleviate their loneliness by creating a "chemical seatbelt" and an "emptiness headrest." They even sign a contract to enforce their decision to break up and cut off all contact. The chorus emphasizes the absence of love and the emptiness that remains. In the second verse, Henson reflects on the emptiness of using metaphors and clichés to express his feelings. Although his words may be elegant and well-structured, they lack the depth and honesty that true catharsis requires. He fears that he won't be able to truly feel until he lets go of the past and moves on. Overall, "Thesis" is a powerful reflection on the aftermath of a painful breakup and the difficulties of finding closure and healing. Henson's haunting vocals and delicate instrumentation make this a deeply emotional and introspective track.