Isn't it a little easier to get to know Damon's character in Martian, though?
I haven't seen the movie, but I would venture to say he's in every single scene, is he not?
I would say he takes up about half the movie, which is a lot of screen time
but my point is it only takes one scene to help us understand character motivation, or why someone behaves and thinks the way they do
without it, especially for a character like dr mann i'm just sitting around thinking "why is this guy being so difficult right now" and the only reason I could come up with was "he's matt damon"
some examples of 5-15 seconds that allow us to totally understand why someone would be bad/evil/a jerk:
Koba in rise of the planet of the apes: one scene, points at his scars and says "human". instantly I know he's not just a bad guy for the sake of plot but he feels this way because he has been abused by humans in the past. (i had not see the first movie at the time)
Gary Oldman in rise of the planent of the apes: when the power comes on, he finds his ipad and cries over a picture of his family. From this one scene we now understand that he lost his family to the ape virus so he probably blames the apes for that. Suddenly he's not just a generic bad guy who hates monkeys.
Rocket Raccoon in guardians: a 3 second shot of his back scars and pratt's reaction to seeing it and we understand that the character was experimented on, he's not just overly rude to everyone because he was born that way. He had a rough upbringing.
Pyro in the xman movies: forgot which movie it was but there's a great scene where he's at iceman's house and you see him sadfaced, looking at a picture of iceman and his family. From this we can understand why he grew up with hatred in his heart (without a family) and turns bad while iceman stays good.
I love these little moments because you get so much backstory and it makes movie characters feel like real people. in his latest work nolan doesnt have any of this stuff, instead focusing on the large plot points and driving the narrative forward