Fascinating bits from the book, having read to the halfway point:
Grace isnāt depressed primarily because heās woken up weak and alone and stranded in space. That part engages his curiosity as well as simple fear. Heās much more overwhelmed by the astrophage situation, when it comes back to him; and heās mourning his team. Every time he thinks of them, before he even remembers them properly, he starts to cry. His depression seems like loneliness at its coreāhe needs people to care for. Feels like that foreshadows how heāll feel about Rocky.
He also thinks warmly of his friend Marissa (old roommateās ex, still meets him regularlyāhe can keep a friend!), and Steve (the Carl prototype), and Dmitri, the Russian scientist who makes an astrophage punāhe immediately invites him out for drinks. He enjoys people. He gets annoyed easily but moves on easily too. His internal monologue on the Mary, pre-Rocky, is just constantly returning to everything he loved about his dead crewmates and wishing they could have seen what heās seeing. Itās not even that he feels sorry for himself all aloneāitās that he adored them for themselves.
Grace is given first look at the astrophage specifically because heās a middle school teacher; heās not functionally important in the scientific community, and they need someone brilliant but expendable. Stratt is afraid astrophage might kill whoever works on it (is it radioactive? infectious?), and if that happens she wants it to happen to a lone guy who wonāt be too missed, so they can learn from his death how to protect the more important people who work on it later.
And they had no intention of letting him go on working on it! Since he doesnāt become infected and the astrophage disproves his theory, they send him home. But then he has a panic attack teaching his class realizing that theyāre all going to deal with the apocalypse. He storms back into the facility demanding they give him astrophage to work with, because he has to do something. I love that, and it feels like it makes his horror at being ordered to go himself even more poignant. He understands the stakes. Heād storm a high security facility for the stakes. He just doesnāt want to die.
Heās completely terrified of zero Gāhas a phobia of falling. He expects the fear and tries to psych himself up for it but as soon as the engines cut out he doesnāt just scream, he flails and curls up into fetal position and vomits into his jumpsuit (because even while having a full breakdown he remembers the dangers of free floating liquids and aspiration). But in twenty minutes heās figured out how to get around while floating and is starting to have fun. Everything that terrifies him also wakens his curiosity, and that saves him over and over.
His mind moves a million steps a minute. He thinks of every possible outcome and wants to test them all. Heās deeply impatientākeeps skipping important steps in his science to move faster. The unbalanced centrifuge in the movie actually makes sense when you know he did things like freehand the nanosyringe which should have been attached to a precision machine because he was annoyed and āfelt like getting stabby.ā Heās also not fully aware how exceptional his mind isārepeatedly excuses his encyclopediac knowledge of physics and complex near-instantaneous mental math with āscience teachers know things.ā
Not only is he confused and embarrassed by other peopleās sex lives, he doesnāt notice at all when people are into him. Dr. Lokken (book-only character) is constantly arguing with him but gets flustered when he smiles at her or praises her ideas, tries hard to convince him of her theories, and looks to him for grounding when shocking things happen; he is simply baffled at this.
Grace theorizes that an ancestor of astrophage is the source of interstellar lifeāthat as it traveled between planets and stars to breed it shed cells onto planets capable of supporting water-based life, which evolved into humans, Eridians (yes, theyāre also water-based), and whatever else may be out there. Rocky says that only the two of them met because any other planet with life less advanced wouldnāt be able to travel in space, and more advanced planets could solve the problem without leaving. Eridians and humans are both at the stage of development where they needed to go see Tau Ceti for themselves to learn the answer.
Grace is not just a yapper but a very good listener, when he doesnāt have a theory to prove. Heās gentle with Marissa on the day astrophage is identified, with Stratt when sheās panicking about putting the crew in comas, with the climate scientist grieving the changes to earth needed to survive, with Rocky when heās asking for help in sleeping and explaining the crew deaths. Heās the one who puts a hand on the divider and tells Rocky he doesnāt have to be alone anymore. Grace may be blunt but heās deeply empatheticāprofoundly good traits both for first contact and for a middle school teacher.
Heās also so observant of the different ways Rocky shows emotionāa quaver for surprise, standing taller when heās happy, lower notes for grief, trilling ones for excitement and shock. He doesnāt rely wholly on the translator, only for what he canāt rememberāheās deeply attuned to Rocky from the beginning and enjoying their complimentary differences. He just wants to share what he can. We couldnāt ask for a better Sol ambassador.