Monday, February 20, 2023

How can we portray languages in games?

I've looked at books. I've looked and movies and TV shows. I've skirted around looking at audiobooks.

But what about games? Table-Top Role Playing Games (D&D, Pathfinder, GURPS, etc.) have a rather unique relationship to their audience--the audience is an integral participant in the creation of the story that they are experiencing! Which makes any linguistic issues considerably more immediate and immersive than they can be in any other medium. They are also uniquely difficult to study, as the stories are (excepting streamed and recorded gaming sessions) ephemeral.

At LTUE 2023, I had the realization that this was a medium worth studying, and that the only way to really do it would be to talk to game masters and players about their experiences, if they have had any experiences with integrating multiple languages into a game. So, if you're a player or GM and have something to say about this, contact me!

In the meantime, I've got my own experiences to reflect on, and a few preliminary conversations. A lot of gaming settings include multiple languages in the background (and in fact, I am currently under contract with a game publisher to create naming languages for a new RPG campaign setting), but game systems almost always provide some mechanism for getting around any real language barriers--universal translators, or Comprehend Languages spells, etc., and most DMs won't include linguistic content as more than a brief puzzle or background color. And there are perfectly understandable reasons for that--aside from issues that pertain to all fictional media, telling your players that they can't understand what someone else is saying can feel a lot like saying "You can't play my game." And to quote Bob Defendi, "If you tell your players 'you can't play my game', they'll just leave."

But I've been in games where language barriers were used to good effect, without spells or technology to eliminate them. This was done in two ways: one which relied on the fact that I myself am bilingual, and one which did not.

In the first instance, our GM mapped in-game languages onto the real-world languages spoken by various members of our group. Thus, we could map our real-world linguistic diversity into the game--if I didn't want everyone in the party who spoke Common to understand something, I could speak Russian rather than English to represent that my character was speaking a particular in-world language, and only the other players (and by extension, their characters) who also spoke Russian would understand. So, do you ever have players who keep secrets from each other? I know my groups do! And exploiting natural language barriers is an easy way to manage that.

In the second instance, we all just kept track of which languages our characters spoke in-world, and the GM avoided Not Letting Us Play The Game by simply ensuring that every NPC could be understood by some member of the party--but, it was then up to that member of the party whether or not to inform everyone else, and how accurately to "translate"! Thus, the GM could direct information to particular characters, with in-world justification. Real-world communication in this case just relied on passing notes to keep secrets.

Neither of these approaches involve literal representation of in-world languages. They can be completely fictional, with no concrete form. So, making decent role-playing use of conlangs is still unsolved, from my perspective, although I know there are people who have done it! But, my own experiences do show that it is possible to integrate linguistic representation into a game in a way that involves the characters and still keeps things fun.

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The Linguistically Interesting Media Index

Sunday, February 12, 2023

Decoding Sangheili in Halo

The Halo TV series, adapted from the eponymous video games, features a conlang, Sangheili, used by the Covenant aliens and developed jointly by David J. Peterson and C. Buck.

Unfortunately, its deployment in the show is... uninspired. As such, I'm not going to bother much with quotations in context, because there just isn't anything to analyze! All Sangheili dialog (with the exception of one word, which we'll get to later) is just straightforwardly subtitled, with no attempt at affordances for comprehensibility in the construction of the dialog, acting, or set design. This kind of surprised me given the general film industry avoidance of long stretches of subtitles (maybe the stigma is going away now that we all need subtitles all the time anyway?), to the point that I tried to find some artistic motivation behind that choice. And I did come up with a possible one, which maybe somebody else would actually use--subtitling with no other affordances does, at least for me, have the effect of making a scene understandable while maintaining a certain emotional distance from the characters involved, compared to the English-speaking characters whom I can understand effortlessly. That's a good thing for bad-guy aliens! However... they do exactly the same thing with, e.g., Korean dialog in the series. And I don't think we are supposed to be emotionally distant Korean-speaking humans!

In order to attempt to make sense of this, I reached out to C. Buck on Twitter to see if he or David had any insight into the creative process for using the Sangheili language in the series. And, well... the answer is "no". Pretty much what I expected, but still disappointing. Quote:
The language creation is very much driven by how and when the writers and/or producers decide they want to use it, in order to enhance the story, or add depth to the narrative. While David and I did quite a bit of work on the grammar, and how the language works, ultimately, the syntax, lexical features, and in some ways the rhythm of the language is where our decision making ends. The rest is very much in the hands of the show-runners.
This is standard in the industry right now, but despite being standard, it is something of a sad state of affairs. I would think that if a production is going to hire a linguist, they might at least consider asking for their input on linguistic issues! Note that that doesn't mean I expect such input to always be acted on--consultants of all types are routinely ignored in film and TV production when it turns out that realism gets in the way of the plot--but it would be nice if showrunners at least were interested in what options were available to them! Oh well. Baby steps.

Sangheili also highlights a generic problem with conlangs in sci-fi film contexts: they are always designed to be pronounced by human actors (though, see Star Trek: Discovery, to be covered in a later article), possibly with some electronic distortion added in post. This makes sense--actors wanna act, and modelling and synthesizing an alien vocal tract is a whole lot of work. So, we just sort of all accept this standard trope that all aliens have human-like vocal tracts--it's not that much of an additional stretch when we are already accepting that most aliens are humanoid-with-funny-foreheads anyway! But Halo makes its aliens at least a little bit weird--not just humans in costumes with prosthetics. And it makes them weird in ways that obviously and significantly impact their vocal tracts! The Elite Covenant soldiers don't even have lower jaws! So the idea that all of the various species in the Covenant can speak one language, and that that language is also compatible with human physiology, just stretches my suspension of disbelief a little bit too far. In improving in one category, the show's creators have highlighted the deficiencies of another.

However! There is one shining beacon of linguistic awesomeness in this show. In episode 4, we get this conversation:
-"I know what a Needler is, Kai."
-"Well, the Covenant have another word for it. What is it again?"
-"Qkhep'os."
-"Oh, yeah, that's it. Qkhep'os. Qkhep'os."
-"Correct"
-"How-- How do you know that?"
-"Well, that's what they say when we turn it on them. Though I guess it could just mean, [Crap], please don't kill me."
-"Also correct."
They highlighted The Gavagai Problem! That's the kind of sweet, sweet linguistic science popularization that I am here for!

This is the impetus for realizing that the Spartan soldiers, who have had a lot of close contact with Covenant soldiers, might be very useful for decoding the Sangheili language. And a few seconds later, we get this lovely frame:


There's a spectrogram! With time-aligned IPA transcription! Somebody was trying, and that makes me happy.

Saturday, February 11, 2023

Some Thoughts on Gripping & Backtile

Gripping and Backtile are languages (or language sketches) by Sai, with collaborators, in the tactile modality--i.e., communicated through the sense of touch.

Gripping, developed in partnership with Alex Fink, is by far the more fully developed of the two. Sai documented the development of the phonology in two YouTube videos, Phonology of a gripping language, part 1 and Phonology of a gripping language, part 2, and Sai & Alex gave an introductory talk on the language at LCC3 (slides available here to follow along). There is also a reference grammar.

Backtile, developed in partnership with Nai Damato, is a language sketch, for which the linked Google Doc is the entirety of available documentation.

My initial approach to relating to either of these languages is to compare them with how natural tactile languages operate. There are not many of those, but between nat-tact-langs, Gripping, and Backtile, we can define a fairly large field of potential design space for tactile languages, which is pretty exciting from the point of view of providing inspiration for other conlangers. Unfortunately... I don't actually know a whole lot about natural tactile languages! In fairness, not many people do--the literature is sparse--but Sai and their collaborator for Backtile, Nai, at least have considerably more personal experience in that area (where "considerably more" means "any at all", and Nai actually has a relevant university degree). Fortunately, the Backtile document does explain its naturalistic inspirations, and Sai, Nai, and Alex have all been available to provide additional context.

I want to be annoyed at the limited documentation for Backtile, but it is admittedly just a sketch, and I can't fault the creators for not feeling like developing it further; if that's all there is to document, then that's all there is to document. As it is, Backtile intersects with some of the coding strategies used in actual Tactile ASL / Protactile. There is, however, also a smidgen of artificiality in the use of braille, with finger and palm pressure used to communicate the dot pattern of a braille cell for spelling. In fairness, this is something that is actually done in Deaf-Blind communities, but importing braille feels to me like importing oral spelling into English--it's a distinctly technological process, tied to the idea of writing, and as such goes against my own intuitions about what is "natural to the medium". Alex has expressed similar feelings, though neither of us can precisely identify which features make it feel artificial, aside from its history as a designed system. But hey, if real life Deaf-Blind people actually do that already, then clearly it works, so you might as well use it! The other aspect in which Backtile feels somewhat artificial is in the extremely restricted articulatory space--it's articulated exclusively on the upper back/shoulder blade (hence the name). However, this feeds into some desirable properties of the system--being less tiring than hand-following, less socially awkward than more high-contact tactile signing, easily accessible, and allowing full duplex communication between two people with hands resting on each other's shoulders.

Gripping is in some ways much more artificial, although it has some of the aesthetic of hand-following tactile signing. It is meant to be a covert communication system for couples in situations where it would not be weird for them to be holding hands in public. Though neither Sai nor Alex were aware of this when constructing Gripping, it has some similarities to Somali Tactile Livestock Negotiation Code, in that involves one hand from each person, communication by pressure on particular points of the receiver's hand, and is meant to be covert--although in the case of Somali Tactile Code, only the message is covert, not the fact that communication is occurring in the first place, and Gripping is considerably more elaborated and flexible! (Note that the linked article refers to the Somali system as a "language", but it's really not--it is a highly context-restricted code with limited expressivity.)

I mentioned above the concept of "natural[ness] to the medium", a useful concept which I was introduced to by Sai. I'll just quote, because they describe it at least as well as I could:
I have a conception of "natural to the medium", which has only a coincidental relationship with "is similar to natlangs". All natlangs are natural to their media (barring some bad conlanging by authorities), but not all things that could be natural to the media are found in an extant natlang, because the latter is by no means a covering set of the possibility space. There are things they just don't happen to have evolved to, but which could occur — and among those, there are both ones that could occur by derivation from extant/historical natlangs, and ones that could not occur from them because the founder effects plus diachronic changes wouldn't reach some part of possibility space.

This is a useful concept to have around for critiquing all sorts of conlangs, but especially for critiquing conlangs in media for which there just aren't a lot or (or any) natural points of comparison. And while Gripping does seem very artificial with things like Tactile ASL and Tactile Auslan as one's basis for comparison, I don't think it can be said that it isn't natural to the medium--and given that it has radically different design goals, I don't think we should expect it to look "naturalistic" with regard to natural tactile sign languages. Indeed, Sai's phonology videos go to great lengths to explain how it is natural to the medium, by detailing the extensive experimental work that Sai and Alex did to find sets of contrastive features that were easy to articulate and easy to perceive, which is really a rather unique opportunity available in this particular medium, because it still uses the human body, just in a new way. That kind of interactive experimentation with a new communication medium is considerably harder to pull off for, e.g., alien languages using senses and articulators that humans don't have, like my own Fysh A language.

One particularly interesting feature of Gripping is that the phonology is asymmetrical--the person whose thumb is on top in the grip produces signs differently at the articulatory-phonetic level than the person whose thumb is on bottom. This is to get around the fact that switching positions is awkward and slow. However, if one were to eliminate the secrecy requirement, a different solution inspired by four-handed Tactile ASL signing presents itself--you could use a double grip for a full-duplex communication, where each participant has a dedicated receiving hand and a dedicated sending hand! There's an idea if any other conlanger wants to pick it up. (Also note that there is a lot more phonetic space available to explore if you drop the requirements for secrecy, so if you want to experiment with your own one-pair-of-hands tactile language, don't assume Gripping has already covered the entirety of available phonological options!) Sai and Alex did not pursue this route for several reasons, in addition to the obvious loss of secrecy:
  1. You can't move around easily while clasping both hands--this would make it a converse-in-place system. However, that's not too different from what actually happens with natural Deaf-Blind tactile communication, so it's not a deal-breaker if someone else wants to run with the idea.
  2. Clasping both pairs of hands is considerably less comfortable in a relaxed position, and more effortful in an un-relaxed position.
  3. Full duplex communication is absurdly mentally challenging, so while having the option is neat, lacking it really isn't a problem. Full duplex really just allows you the option to interrupt and talk over your interlocutor. (But perhaps this could be used as the basis for some linguistic sci-fi--imagine an alien species which does have the mental capacity for full duplex communication, and a medium that supports it!)
As-is, with the single-grip setup, Gripping is somewhere between half- and full-duplex on the phonological level, similar to audio languages in which it is possible to talk over people. Unlike audio languages, however, certain combinations of subordinate and dominant articulations are actually physically impossible to pull off! The half-duplex system currently documented is already an improvement over what is possible with, e.g., Tactile ASL, which does require repositioning to exchange the roles of sending and following hands. On the other hand, Protactile communication does allow for limited back-channeling (e.g., "ACK", "uh-huh", "yeah", etc.), and Sai has speculated that a similar level of discourse-management simultaneous communication could be added to Gripping using the subset of phonology that can be simultaneously articulated and perceived, though they have not yet tried it.

Additionally, just as oral languages can be partially lip-read and ALS signs can be felt, Gripping articulations are useful outside of their primary modality. Sai has given the example using Gripping as a very restricted sign language with no hand motion, for covert hand signals--which is very similar to the "small motion" Atreides sign language that David Peterson developed for the latest film adaptation of Dune.

Some Thoughts... Index

Saturday, February 4, 2023

Some Thoughts On Glossing

A Note: This article has been edited from its original version to take into account feedback from David himself.

David J. Peterson has on several occasions been outspoken against Interlinear Glossing, particularly in the context of developing and documenting conlangs. I find that very strange, as I find glossing absolutely indispensable in language documentation, so after our last social media exchange on this topic, I decided to do some Deep Thinking.

And this is the part where I feel a lot like Brandon Sanderson expressing his dissatisfaction with Audible. I don't dislike DJP! I still have signed copies of his books on conlanging for kids and adults, and I am quite happy to provide those Amazon Affiliate links so other people can give him money for them! But on this one point at least, I think he is wrong, and I want to understand why, and what glossing is really good for.

To that end, I asked a bunch of people on social media about their opinions on glossing. You can see the raw responses on Facebook (group 1, group 2), Reddit, Quora, and Twitter. It turns out to be very difficult to get the question across effectively given the differing restrictions on message length and type on different platforms, but I still got some pretty useful data.

There are, I think, two major factors at play:

First, David does not believe in morphemes--or at least, does not find the concept of morphemes useful language design. And that's fine! David is far from the only person to point out that morphemes aren't necessarily a great concept even in formal linguistics, or to propose alternative models of morphology.

Second, David works for an unusual audience. As essentially the world's only full-time professional conlanger for movies and TV, the primary audiences for his documentary output are:
  1. Actors, who have to be able to pronounce translated lines, but not necessarily understand what they mean.
  2. Set design artists, who need access to font files and translated text, and need to know what it looks like and how much space it will take up... but again, not what it actually means.
Now, I thought that these would be situation where, admittedly, full on Leipzig-style interlinear glossing won't be particularly useful, and may in fact be an inconvenient distraction. I am, in fact, fully ready to admit that there are many situations in which interlinear glossing is not useful. However, while (as I would expect) they are not fully detailed Leipzig-style morphological glosses, David does provide phonetic and word-level interlinear glosses for actor lines, as you can see published on his website, and has said that this is "one of the only places I think it's useful." (Incidentally, William Annis also provides actors with interlinears so they don't stress the wrong words--but again, not with full morphological analyses. I don't know how, e.g., Marc Okrand, Paul Frommer, or Christine Shreyer work, but I would not be at all surprised to find that it's very similar.) 

But, I suspect that David's unusual success in this particular context has led him to overgeneralize. Now, to be clear, I don't know that David has any problem with glossing in an academic linguistic context; to quote "When you're glossing to analyze, that's analysis. It has its place, and its place is in analysis, not creation." Thus, some of this might seem like attacking a strawman--but as far as I am concerned, conlang documentation is language documentation, and what's good for natlangs is good for conlangs, and vice-versa. In fact, I don't even particularly disagree with the statement that glossing is for analysis--but I do strongly disagree with the idea that analysis and creation must be considered distinct, and with the implication that analysis should be excluded from presentation, which is where conlang creation and natural language documentation collide.

In this reddit post (a response to an earlier revision of this article), David breaks down the problem as follows:
The problem I see is twofold:
  1. Biased morphological analyses (both betraying the framework being used, and how the language itself is being used).
  2. Taking something readable, like language data, and exploding it, so it's a mess.
These are not bad points. However, they should not be applied overly broadly. Thus, when David goes on to say that "In short, morphological glossing is for analysis, not for presentation—or for comprehension.", I must vehemently disagree--that is throwing the baby out with the bathwater. And while this looks initially like a very different breakdown of the issue than what I came up with, they actually line up pretty well--so let's take a look and my two points and David's to points together.

Regarding morphological analysis: It is true that any particular gloss at a level deeper than word-for-word will entail some kind of analysis, and an associated theoretical position. But does that mean you have to believe in morpheme theory to use glossing? No! Martin Haspelmath doesn't believe in morphemes (see links above), but he is (along with Bernard Comrie and Balthasar Bickel) nevertheless one of the editors for the latest edition of the Leipzig rules! Which rules include several options for notating non-concatenative and non-trivially-segmentable morphology. And while not all such proposals are included in the current edition of the standard rules, there have nevertheless been even more proposals for glossing symbols that explicitly avoid making theoretical claims (e.g., "+" as an alternative to "-" vs. "=", to indicate that some particular subforms are joined without making any claim about whether the joint is an instance of affixation cliticization, or compounding). And nobody is forcing you to strictly stick to the limits of the Leipzig conventions. In fact, one respondent to my social media surveys was explicit about the idea that glosses "should be geared towards the readership, and the idea that glosses should always follow a standard format is wrong".

So, just because you don't accept a particular theoretical position is no reason to reject interlinear glossing altogether. You can design your style of glossing to fit whatever theoretical or non-theoretical considerations you prefer, to best communicate with your target audience.

But suppose you do expose a theoretical bias in your glossing: is that actually a bad thing? Certainly, it can be bad, particularly if you aren't doing it on purpose, and I will address that in more detail below, but it does not need to be. In many cases, the analysis can be the whole point, and betraying the framework being used can be a positive addition to the presentation. Several of my own conlangs, after all (notably, the three "Languages of Spite") exist to demonstrate that a language with a particular theoretical grammatical structure is possible. Omitting the intended analysis from the presentation in such cases would make it nearly worthless. So what is David's solution? "On the other hand, if there's sufficient language data and accompanied by faithful, accurate translations, that's all you really need." Technically, this is true--it's what a working linguist would rely on for documenting a natural language in the first place, after all, and the same can certainly be done with conlangs--but do you really want to ask that of your audience? I don't; no matter how much raw language data is provided, among the people who might read an appreciate a conlang grammar, practically none of them will do the work to produce the analysis themselves. So, again, I think David's success in a particular context has led to overgeneralization--if you are producing a conlang with the intent that it be appreciated through the aesthetics of text produced in that language (where "text" here is meant in the technical sense, encompassing spoken dialog as well as written text), then a gloss may be unnecessary to your purposes. But if you intend the language to be appreciated for itself, as an exercise in constructing a system, then the analysis is the thing, and it must be part of the presentation, just as much as it must be included in any academic paper analyzing the structure of a natural language.

Furthermore, creation and analysis need not be separate stages. If you work that way with your own conlangs, cool, I won't tell you that you're wrong--but it's not the only way. In my own experience, analysis and creation feed back into each other; analyzing what I have already created generates new ideas other features to create, which may interact in unexpected ways and lead to changes in direction or re-analysis that makes the original obsolete. When working this way, interlinears are a way to communicate with myself.

Now, David has also said that
In fact, most of the time when I'm looking at conlangs, I completely ignore the glosses, because they're often (a) incoherent, and (b) wrong.
And... yeah, I can't argue with that. But does that mean that we shouldn't do them at all? No! It simply means that we shouldn't do them badly! (At least, not in the final presentation; if your glosses-for-yourself produced in the creative process are crappy, but they work for you, then more power to you!) If your glosses are incoherent, then get better at glossing! If your glosses are wrong, I am glad that you included them, so that I could make that determination myself. It opens the door to a potentially productive conversation. It is not at all unusual for me to come across a datum in a natlang grammar or analytical paper and think "I'm pretty sure that analysis is wrong", so it should not be at all surprising that the same would happen with conlang grammars. But the gloss provides a means of understanding the author's analysis as well as formulating my own.

Now, let's move on to considering my and David's second points: what's appropriate for the audience, and when does a gloss enhance or detract from the presentation? Well, as I've already explained, when The Analysis Is The Thing, you should include a gloss! But beyond that, I myself thought that appropriate usages were more restricted than it turns out they actually are before I started this little bit of research; in particular, I thought "well, if you are writing a document intended to teach the language, then interlinear glossing is probably not terribly useful." After all, in my formal school studies of French and Russian, not once did I ever encounter a textbook that contained interlinear glosses--they just teach you the vocabulary and morphology ahead of time, or else expect you to memorize complete constructions and infer the rules later, and the main point of a Leipzig-style interlinear gloss is to make the text accessible to someone who doesn't have the necessary background in the language yet (or ever). And yet, if we look up Interlinear Glossing in Wikipedia, the very first phrase of the article is "In linguistics and pedagogy" (emphasis added). And furthermore, consider this excerpt from Nishnaabemwin Reference Grammar by J. Randolph Valentine:
Linguistic researchers may be disappointed to see that morpheme-level segmentations of examples are rarely provided. At a conference held in Thunder Bay, Ontario, in 1996, a steering comittee of Nishnaabemwin speakers explicitly requested that such details not be included, as it was felt that they interfered with the flow of the presentation, and contributed to what is sometimes called the "intellectual mining" of aboriginal languages and cultures. To accommodate these concerns, I [provided] word-level annotations[...]. [I]t seems to me that there are many good reasons for working the annotations into the text. For one, many of my readers will be semi-speakers of Nishnaabemwin, who will benefit from the help annotations provide; secondly, Nishnaabemwin varies dialectically, and the word-level glosses will allow fluent readers to more readily accommodate dialect differences; lastly, of course, the annotations make the language more accessible to those lacking prior exposure.
I have complex feelings about this situation. On the one hand, if this is an academic reference grammar, then yeah, I would be surprised and dismayed at the lack of detailed glosses. But, on the other hand, if it is used largely as study reference for learners of the language, then I agree with steering committee that detailed glosses would indeed interfere with the presentation! But on the gripping hand... readers "will benefit from the help annotations provide". And that triggered a realization that I am shocked I did not have earlier, given that I spent 9 years working for a university language department developing software to improve adult language acquisition! What's the number-one most effective technological assistance you can give to a new language learner? Parallel translations, subtitles, and word-by-word glosses to ensure they are exposed to comprehensible input! Anything that will reduce the friction of discovering the meaning of words or phrases the reader is unsure about, keeping them engaged with the text in a flow state. At the end of my time in academia, we were even looking into automatic morphanalysis for augmented reader applications. So while a fully detailed Leipzig-style interlinear gloss can get distractingly complex, and thus unhelpful, some level of glossing--tailored to the audience, not slavishly holding to the formal Leipzig rules in maximal detail--is clearly appropriate to pedagogical settings!

To quote David again: "The glosses I typically see make the work less accessible, and the work would be improved by their removal." I suspect that Nishnaabemwin steering committee would agree. And yet, "the annotations make the language more accessible". The issue is not, fundamentally, interlinear glossing. The issue is bad interlinear glossing! David is absolutely right that many people (conlangers and academic linguists alike) are not great at writing glosses clearly, and often have a tendency to include far more information than is necessary for the purpose of the given example. This is why you don't give a full morphological breakdown to an actor who just needs to pronounce the line with right prosody! But let's not throw out the good with the bad; don't just stop glossing, learn to consider your audience, and learn to gloss well.

What about not-teaching-a-language settings? Well, that's where glossing really shines. If you are writing an article, or a descriptive grammar, whether documenting or analyzing a natural language or a conlang, pretty much everyone surveyed agrees that interlinear glosses are "crucial" or "absolutely indispensable"--and as I have argued above, there is at least a certain genre of conlang presentation in which The Analysis Is The Thing. But, that genre aside, on its own, this is just an opinion, and no more forceful than "glossing is useless". So, why are interlinears indispensable? Fundamentally, it's because your audience does not know the language (or at least, cannot be assumed to know the language--if you are writing a paper on English in English, you can probably skip the glosses most of the time; same goes for, e.g., writing a paper on Spanish in Spanish, etc., where obviously your audience will know the language under discussion) and will not be learning the language. As one respondent put it, the gloss is
the part that lets me know what the hell I'm even looking at. A string of Latin script doesn't even tell me what your language sounds like, let alone how it works. If you don't gloss, you could literally just as well post gibberish and no one could tell the difference.

Which, given the mystery surrounding the Voynich manuscript, does indeed seem to be true! And as I already stated above, even if you provide "sufficient" language material for the reader to come up with their own analyses... they just won't. Ain't nobody got time for that! To quote David again: "I expect if you give a grammar and unglossed data of a language you've created to someone else to gloss, you're going to get back glosses that surprise you." No doubt! And I would love to run that experiment! But it's not an argument against making your own analysis more accessible.

The more different the structures of the analyzed and analysis languages are, the more important interlinear glossing is to help elucidate the structure of the original and how it actually corresponds to the final translation. It gives you the details that the author knows and the reader needs.

If you are trying to support a particular theoretical analysis, then glosses are a succinct way to illustrate that analysis. As noted about above, you don't have to subscribe to any particular theory to use interlinear glossing, but if you do, an appropriate choice of glossing conventions will let you show it! But whether or not you are committing to an analysis, interlinears are also helpful in allowing the reader to develop their own analyses. To quote another respondent:
An example sentence without a gloss conveys that an example or illustration exists
An example sentence with a gloss actually illustrates how things work and shows the reader information that might actually be part of it working.
(Emphasis added.) In other words, a gloss, which conveys author knowledge about the structure of the analyzed language, helps to prevent the reader from going astray and engaging in "analyzing the translation". It makes the source more accessible without having to analyze huge quantities of text on one's own, such that the reader can usefully formulate and propose their own hypotheses to explain the data, even if the original glosser is theoretically biased. This is particularly important when the point of an example is to illustrate a grammatical feature that may not be fully preserved in the language of analysis. For example, to quote another respondent:
If I were writing in Eng. about resumptive pronouns in X, and I gave a sentence with a translation "I saw the neighbors we sold the car to" without adding "I see-PST neighbors Rel we sell-PST them-DAT car", I'm not really presenting direct info about pronouns in X.
Information is almost always lost in translation, and appropriate glossing allows you to preserve it, and focus on what you want the example to show!

So, should you always gloss everything? No, there are definitely situations where it is not useful for the target audience or purpose of the text. Should you always gloss in maximal detail and with perfect conformance to the formal Leipzig rules? Also no--you should tailor your glosses to the intended audience and what you want to convey with a particular example. But should you never gloss? Also no! If you intend your documentation to actually be useful to other linguists, or appreciable by other conlangers, you should know how and when to gloss, and do so liberally!


Some Thoughts... Index