the book scene where dubois and shapiro tell grace they’re having sex is really interesting. it’s not just that’s he’s uncomfortable talking about sex (although he very much is) it’s that he doesn’t understand why they would have sex if one of them is guaranteed to die in space soon. they kind of included this in the movie (when he asks stratt why everybody is partying and hooking up if they’re all gonna die)
there’s another line that stood out to me in the book, where amnesiac grace initially finds his dead crewmates, and he goes “i hope they weren’t friends of mine!” which imo is a crazy thing to say upon finding two corpses
it’s not just that grace avoids forming close relationships, it’s that he avoids it (in part) in order to avoid experiencing loss. really interesting character trait especially knowing he has no immediate family (did they die? is that why he’s like this?) not even a pet (is he scared the pet will die?)