Some actors are just plain wrong for some roles. Bella Thorne as a quantum physics whiz kid is one of them (and it’s not an issue or gender or looks; attractive women can and do play science types convincingly — Jodie Foster and Laura Dern come to mind). It would help if Vivien (Thorne) sounded like she knew what she’s talking about, but quantum physics serve no purpose in this movie other than as a clumsy metaphor for falling in love. Vivien herself seems ambivalent about her chosen field of study, describing it on separate occasions as "simple" and "complicated," as well as "fascinating" ...