It's the kind of movie where you wouldn't be surprised to discover Reitman and co- writer Erin Cressida Wilson were ticking the boxes on a literal checklist.

Top marks go to young leads Ansel Elgort and Kaitlyn Dever, who manage to create their own believable world within the mawkish miasma of this flawed movie.

Flitting furiously from one story to the next, the film seems, appropriately enough, unhappy to allow any exchanges longer than 140 characters.

It's just a statistical fact that if you're blasting a shotgun blindfolded, you're bound to hit something eventually. Can we have the old Jason Reitman back now?