I'm going to put aside my wanting the sci-fi aspect to have a more prominent role. Whenever they jump forward in time, it's abrupt, and it would change tone. It also feels like they were trying to fit 2-3 movies into one (but ironically, it's based off a short story!) All the actors give excellent performances, the direction is near perfect, the cinematography is astounding and some of the best/my favorite I've ever seen. Matt Damon and Emily Blunt also have good enough chemistry. It's not perfect, but it's also not given the chance to fully develop. I guess the main problem is the writing, and I don't feel like the directing had much to do with the problems I have. I also wish the ending had a bit more of a payoff, but that's mostly because I wanted the sci-fi to have a more prominent role. I think this will be a highly re-watchable movie.