—go see it! Though a little light on the science, the movie goes hard on the relationship between schoolteacher Ryland Grace (Ryan Gosling) and an extraterrestrial named Rocky, and it’s a ride well worth taking.
But as good as it is, the movie shares a small flaw with the book: Despite having very few things in common, Grace and Rocky learn to communicate with each other extremely quickly. In fact, Grace and Rocky begin conversing in abstracts (concepts like “I like this” and “friendship”) in even less time than it takes in the book. Obviously, there are practical narrative reasons for this choice—you can’t have a good buddy movie if your buddies can’t talk to each other. It’s therefore critical to the flow of the story to get that talking happening as soon as possible, but it can still be a little jarring for the technically minded viewer who was hoping for the acquisition of language to be treated with a little more complexity.
And because this is Ars Technica, we’re doing
the same thing we did when the book came out: talking with Dr. Betty Birner, a former professor of linguistics at NIU (now retired), to pick her brain about cognition, pragmatics, cooperation, and what it would actually take for two divergently evolved sapient beings not just to gesture and pantomime but to truly
communicate. And this time, we’ll hear from Andy Weir, too. So buckle up, dear readers—things are gonna get nerdy.
A word about spoilersThis article assumes you’ve read Weir’s novel and that you’ve seen the movie. However, for folks who haven’t yet seen the film, I don’t think there’s much to be spoiled in terms of the language acquisition portions that we’re going to discuss—the film covers rather the same ground as the book but in a much more abbreviated way.
Still, if you want to avoid
literally all spoilers, skip this article for now—at least until you’ve been to the theater!
The yawning chasm of “meaning”Dr. Birner’s specific field of study is the science of
pragmatics. “Pragmatics has to do with what I intend by what I say and what I mean in a particular context,” she explained to Ars on a Zoom call earlier this week. She elaborated by bringing up her (nonexistent) cat—the phrase “my cat” can have a multitude of meanings attached, all of which are inferred by context.
If you know Dr. Birner has a cat, her saying “my cat” could refer to that cat; if you know that she doesn’t have a cat but used to, “my cat” could refer to
that cat instead, even though the semantics of the phrase “my cat” haven’t changed. That’s pragmatics, baby!
Pragmatics are particularly relevant to the Grace/Rocky language-acquisition problem because the discipline involves the creation of inferences by the listener about the speaker’s mental state and about what specific meanings the speaker implies.
But “meaning” is a fraught word here, too, because ultimately we
cannot know for certain the exact meaning being implied by another person because we cannot ever truly peek inside someone else’s mind. “We are always making guesses about what our shared context is and what our shared cultural beliefs are, and, indeed, what our shared knowledge as members of the species are,” Dr. Birner continued. “And I think of this because of thumbs-up/thumbs-down.”
“The cognitive linguists George Lakoff and Mark Johnson put out
a book, boy, back in the ’80s,” she said. “They talked about all of language as metaphorically built up from embodiment, our embodied experience, and our senses. So we sense up and down, and then we have this whole metaphorical notion of happy is up, so we have a thumbs up, ‘I’m feeling up today. I’m just feeling high. My spirits are lifting.’”
“Or, I can be down in the dumps,” she said. “I can be feeling low, my mood is dropping, thumbs down,’ and there’s this whole metaphorical conception. And I loved the way
Project Hail Mary played with that in that Rocky didn’t share that. Rocky did not have a metaphor of ‘happy is up,’ the way Lakoff and Johnson would say we all just do.”
I asked Dr. Birner if our “up is good, down is bad” association has a biological basis in our cognition or if it’s something that has simply been shaped into a broadly shared metaphor over thousands of years of language use, and she took a moment to answer.
“That’s a really good question, and I don’t remember whether they deal with that,” she said. “But I could imagine it being biological because we start as little helpless things that can’t even stand up. And soon we stand up, we get taller, we get smarter, we get better and better the taller we get. I can actually very well imagine a biological basis for it.”
The first leap—not math, but truth
Let’s focus in on some of the specific linguistic mountains Grace and Rocky would have had to climb. The one that struck me as perhaps the most basic would be starting from pantomime and figuring out the most important thing: the twin concepts of yes and no, and the companion dualities of true/false and equal/not-equal. To me, this feels like the most mandatory of basics.
And here, perhaps, we can fall back on some good ol’ Sagan—or at least the movie version of Sagan. Dr. Birner and I (along with my colleague Jennifer Ouellette, who also hung around on the Zoom call) went back and forth for some time, but in the end, no one could really figure out a more straightforward way to demonstrate these concepts than the “primer” scene in 1997’s Contact, where the unknown alien signal is shown to contain a small grouping of symbols that appeared to represent addition, along with “equals” and “not equals” sign equivalents.
“That’s a good way to go about it, with equivalent and not-equivalent,” said Dr. Birner. “So at least you get negation, and now you can work on perceptual oppositions—up and down, black and white, loud and soft. I think that would probably be the jumping-off place for yes and no.”
Though there are linguistic biases in English and other human languages that might peek through even here—the inherent tie between “positive” (as in agreement) and “positive” (as in “this thing is good and I like it”). Careful aliens would likely want to spend a fair amount of time interrogating this bias—if it’s even visible at this point. And it likely wouldn’t be, as we haven’t built any of those syntactic bridges yet.
Pidgin? Not so fastGetting those bridges built—going past “yes” and “no” and into some of the other basics that must be established to communicate—is not straightforward. Grace and Rocky benefit from being in a tightly constrained environment with a set of mutual problems to solve; two humans in a similar situation would likely develop a “
pidgin”—an ad-hoc working language cobbled together out of components of both speakers’ languages.
But as Dr. Birner points out, true pidgin here is impossible because neither Grace nor Rocky is capable of actually producing the sounds required to speak the other’s language in the first place. “They don’t actually develop a pidgin,” she said. “They each have to learn the other’s language receptively, not productively.”
“Which is great,” she went on, “because when kids acquire language, it’s sort of a truism that reception precedes production. Every kid is going to understand more than they’re producing. Necessarily! You can’t produce what you don’t understand yet. So it makes the problem a little easier for Grace and Rocky—they don’t have to produce each other’s language, just understand it.”
Who is even there?Grace and Rocky are lucky in that both humans and Eridians are ultimately extremely similar in their cognition and linguistics, even if their vocalizations aren’t alike. This means a lot of the mandatory requirements for conversation as we understand them are already present.
“If I encounter Rocky, I need to know, does he have a mind?” she posited. “Does he have what we call a theory of mind? Does he have a mind like mine? And does he understand that I have a mind like his, but separate? Does he understand that I can believe different things from what he believes? Can I have false beliefs? That’s all a prerequisite for communicating at all. If your mind and my mind had all the exact same stuff in it, there’d be no need to communicate.
“
H.P. Grice said that communication doesn’t happen without the assumption that both parties are being cooperative,” she said. The word “cooperative” here doesn’t necessarily mean that both parties are copacetic—Dr. Birner pointed out that even when people are fighting, they tend to still be cooperatively communicating. There are rules to the interaction that must be followed if one party intends to impart meaning to the other.
Beyond adherence to the cooperative principle, another bedrock of communication is the notion of symbols, the understanding that a word can represent not just an abstract concept but can actually stand in for a thing. “I can use the word mug,” explained Dr. Birner, holding up a mug, “and mean
this. And you understand what I mean, and I don’t have to show you the mug every single time.”
Also on the “mandatory” list is an understanding of the concept of displacement, which Dr. Birner attributes to the researcher
Charles F. Hockett. “Displacement has long been said to be solely human, though not everyone agrees with that. It’s the ability to refer to something that is distant in time or space. I can tell you that I had a bagel this morning, even though I’m not having it right now and it’s not present right here. I had it elsewhere and I had it earlier,” she said.
She continued: “There’s this wonderful article, 1979 by Michael Reddy, called ‘
The Conduit Metaphor,’ where he says that we think in metaphors. And the metaphor he’s talking about is that language is a conduit, and we really just pass ideas from my brain to yours. And he says it’s a false metaphor. It’s clearly not true that that’s what happens, but
we talk about it as though it does. ‘I didn’t catch your meaning,’ or ‘Give that to me again.’ We talk as though this is a thing we
literally convey, and of course we don’t convey meanings. Reddy argues that the vast majority of human communication is actually
miscommunication, but so trivially that we never notice.”
By way of example, she referenced her nonexistent cat again. “If I mentioned my cat, Sammy, well, you’ll have some mental image of a cat,” she said. “It almost certainly isn’t remotely like Sammy, but it doesn’t matter. I don’t need to explain everything about Sammy. If I did, the conversation would grind to a halt and you’d never interview me again. Also, I’d be violating the cooperative principle because I would be saying too much for the current context.”
Math, the universal language?It is a common trope in science fiction—and one brought up more than once in the comments on our last article on this subject—that “math is the only universal language.” It’s a fun, pithy saying that perhaps makes
mathematicians feel good about their dusty chalkboards, but at least from my knothole, it’s a false generalization because
the language in which one does one’s mathematics must be settled before any mathing can happen.
“I’m not sure that even is true on Earth,” said Dr. Birner about the notion of math as universal grammar. “The concept of zero hasn’t always been around, and how much math can you do without zero? There are languages that count, “One, two, three, many,” and that’s it. And those are human languages. So to say, ‘Math is a universal language,’ I’m already not totally on board there.”
“I think math would help, but I don’t think it would get them terribly far because they need the notion of objects. They need the notion of the semiotic function, that things stand for other things.” She paused pensively, then went on. “And once they’ve got that, that there are discrete objects and we both think of the same things as discrete objects, then we can talk about counting those objects and now we’re off and running.”
Whole-object notion is another oft-overlooked component here—often referred to as the “
gavagai problem.”
“You’re pointing to a rabbit, and you say, ‘gavagai!’” said Dr. Birner. “Well, does that mean ‘rabbit?’ Does that mean ‘fur?’ Does that mean ‘ears?’ Does that mean, ‘hey look?’”
“
Quine’s notion is that we default to a whole object. Well, does what counts as a whole object for me count as a whole object for you? Does every conceivable culture have discrete borders on objects?”
The author speaks on human-Eridian similarities
Fortunately for Grace and Rocky, humans and Eridians do have all these things in common because in the universe of Project Hail Mary, the species share a common ancestor. [...]
Weir notes that he worked through a number of the same linguistic issues that Dr. Birner and I raised as part of the story-generation process.
“Let’s say you have intelligent life on the planet,” he said. “What do you need? What does that species need to have to reach the point where they’re able to make spacecraft and fly around in space? Well, first off, you have to be a tribal thing. You can’t be loners. You can’t be like bears and tigers that don’t communicate with each other. You have to have the sense of a community or a tribe or a group or a gathering so that you can collaborate because you can specialize and do all these things. You need that.”
“Number two, you need language. One way or another, stuff from my brain has to get into your brain,” he said, echoing Dr. Birner’s note about Reddy’s conduit metaphor paper.
“Number three is you need empathy and compassion. A collection of beings altogether doesn’t work unless they actually are willing to take care of each other. And that’s not just found in humans—it’s found in primates. It’s found in wolf packs. It’s found in ants. It’s like any collectivized species has to have that trait.”
“You need to have compassion, empathy, which means putting yourself in somebody else’s situation. Compassion, empathy, language, a decent amount of intelligence, a tribal instinct, a group instinct, a society kind of building instinct,” he said. “You must, I believe, have all of those things in order to be able to make a spaceship. Any species that’s lacking any one of those won’t be able to do it. So any alien you meet in space is going to have all of those traits. The Friendly Great Filter is that any aliens you meet, I believe, have to have this concept of society, cooperation, empathy, compassion, collaboration, and so on.”
I’m here for Weir’s explanation—it works within the context of the science fiction universe we’re being presented, and Rocky and Grace need to be able to talk to each other or we don’t have a book (or a film!). But does it ring true under scrutiny? After all, even here on Earth, there is a wealth of problem-solving, tool-using creatures much more closely related than humans and Eridians with vastly different cognitive toolkits. Cephalopods (with distributed nervous systems and pseudo-autonomous arms),
corvids, and cetaceans all have their own evolutionary approaches to communication. [...]
Here, Ars’ Jennifer Ouellette made an important point. “Rocky is basically a rock,” she said. “He’s not a human form, and that’s going to affect how a language, if there is one, evolves in that species—and it’s really going to impact how they communicate.”
“Yes, embodiment is a big deal in communications,” replied Dr. Birner, returning to the subject she’d brought up earlier, that the nature of our flesh-prisons inherently shapes not just how we experience the world but how we communicate. Our physical forms are the product of evolutionary pressures—they are the results of the inevitable, inscrutable dialogue between environment and organism. And the evolutionary pressures faced by Homo sapiens on Earth are vastly different from the evolutionary pressures faced by Eridians on Erid, and that same dialog on Erid led to vastly different outcomes. [...]
Friendly aliensThe most dangerous thing about communicating with aliens this way isn’t mistaking a word or two—it’s the more fundamental problem of what happens to third- and fourth-order assumptions when the foundations those assumptions are built on aren’t quite right. Sure, Grace and Rocky can agree that they are “friends,” but how do you explain “friend”?
“To be someone’s friend can mean a million things,” said Dr. Birner. “I have my best friend since high school. I consider you a friend,” she said, pointing at me through the screen, “and we’ve talked three times. My daughter, who’s now 35, has turned into my friend. What does that mean?”
Indeed, the notion of “friend” is a rough one—it’s fundamental to human interaction, and as such, it carries with it a huge number of (sometimes contradictory) behavioral expectations. When you’re explaining “friends” to an alien, how do you paint it? That you and the alien have shared interests and should therefore work together? That you are genuinely interested in the alien’s well-being? That you’d make sacrifices for them? That you’d expect them to help you haul furniture when you move?
And what assumptions might you make about the alien’s behavior once you’d declared each other “friends”? That they would make sacrifices for you? What if for the alien, the concept they’ve settled on for “friendship” means they’ll pull your limbs off when the adventure is over because that’s what friends do in their culture?
“You need societal grouping,” I supplied, “but you don’t necessarily need friends.”
“Absolutely,” she said. “And now I’m going to
another work from 1982, Maltz and Borker, who looked at kids on the playground, and at that time—I think it’s changed a lot, it’s been 40-some years!—but at that time, they saw that little girls had a horizontal set of relationships. It was all friendship-based and secrets-based, and you have your best friend and then your next best friends. And little boys had a hierarchy, and your whole goal was to get higher in the hierarchy by insulting the kids above you and whacking them and try to be king of the hill.”
“Get
the conch,” I joked unhelpfully.
“Yeah, exactly—get the conch. Again, cultural knowledge.”
Images: Project Hail Mary/Amazon MGM studios[ed. I've always had a vague appreciation for linguistics (their effects on perceived reality and lately their nuances in bridging disagreements - for example, this is the second time in three days that I've heard the term
gavagai). My grandson came over today and he went right to some YT videos explaining the basics of PHM's plot and science, especially how Ryland and Rocky communicated. Then we watched Ghostbusters. : )]
