In this post, Atheer Al-Khalfa discusses the article he recently published in Ergo. The full-length version of Atheer’s article can be found here.

Central Intelligence Agency (CIA), Virginia
Let’s play a game.
You’re in a foreign country. A local produces a set of inscriptions, and your job is to work out what those inscriptions mean (or to translate them in your own language). You don’t understand the local’s language, you are not allowed to cheat, you are not allowed to guess, but you’re allowed up to three clues (a clue can be a partial answer if you get really stuck). Where do you begin?
There’s a dictionary nearby listing what every inscription in that foreign language means. You shouldn’t look through that dictionary; that would be cheating.
You then think: “If only I could figure out what thoughts the local was expressing by those inscriptions, I’d know what those inscriptions mean.” That sounds right, but this feels like cheating too. Isn’t the meaning of any of the local’s inscriptions just the thought the local was expressing by it? Let’s not go down this path.
“Fine,” you say, “then I’ll use a clue: give me all the information in the local’s head.” You think to yourself: “Maybe if I get familiar enough with the local’s current mental state, it’ll point me to what the inscriptions mean.” There is a lot of metal stuff to sift through though; lots of thoughts, hopes, fears., etc. However, given that this strategy doesn’t obviously involve cheating, perhaps it’s a good place to start; a very daunting place to start. Why not use a second clue?
Here is one. Each of the inscriptions the local produced is in fact a simple subject-predicate declarative sentence (in English these are sentences like ‘John is happy’). Great, that narrows the search. You realize you only need to look at the locals’ beliefs. After all, if they were producing one of these sentences, that means they were just expressing one of their simple beliefs—but which belief? There are still so many. You get discouraged again. But you have one clue left. Why not ask for a partial answer, for example, the meaning of predicates?
This is how the situation might look now (order of items between commas is random but color tells you what that part of the inscription means):
- “Ϟ⟁Ϡ ⌖ϰ⟡ ⟁Ϟ⌖Ϡ”, “Ϟ⟁Ϡ ⌖ϰ⟡ ⟁Ϟ⌖Ϣ”, “⟡ϰ⌬ ⌖ϰ⟡ ⟁Ϟ⌖Ϡ”, “⟡ϰ⌬ ⌖ϰ⟡ ⟁Ϟ⌖Ϣ”
- Sara is happy, Zara is happy, Sara is short, Zara is short
Let’s start with the first inscription. What does it mean? By using your clues, you have narrowed down the possible correct answers to two. “Ϟ⟁Ϡ ⌖ϰ⟡ ⟁Ϟ⌖Ϡ” means either Sara is happy or Zara is happy. That is, given the above range of sentences/beliefs (as well as the partial answer), there are only two consistent ways of assigning a meaning to the first sentence. The problem is that no matter which of the two possible answers you pick, it will be a guess, and you will lose the game because you have used up all clues.
That’s the game, but what is the philosophical question motivating this game? As philosophers, we want to explain why a sentence in some language means what it does. This question seems especially pressing given that the relation between a sentence and its meaning is somewhat arbitrary; it could’ve easily meant something else.
Some of the clues our player picked correspond to a strategy in the “charity” tradition of interpretation. According to this tradition, sentences mean what they do because those meanings make the agent “right” as much as possible. And “right” can be understood in different ways. We can interpret so that the meanings we assign to their sentences make them express as many truths/true beliefs/beliefs (this is the option we went with above) or as much knowledge as possible. This is a somewhat strange idea that strikes some as counterintuitive, and philosophers have raised a range of worries about it. The above game shows that even when we help this sort of account along considerably (giving the player lots of clues, one of which is a partial answer!), the account struggles to give the right answer. Of course, the example above uses a laughably small set of sentences/beliefs, but it turns out that enlarging these sets along several dimensions is not all that helpful.
The subfield of philosophy that attempts to answer the question of why an inscription (or any other kind of meaningful entity) means what it does is called ‘metasemantics’. Metasemanticists (I sometimes like to think) are in certain ways like codebreakers (think Benedict Cumberbatch’s character – Alan Turing – in The Imitation Game). Codebreakers take a seemingly non-sensical string of ink and try to transform the string into something that is not just meaningful but also intended by the individual who produced it. What they need to do is figure out how to rearrange the input strings to form the correct output strings. One trouble they face is that there can be too many charitable output strings (in the sense that they are all plausibly intended) – which one is the correct one? Afterall, typically, a sentence has one meaning. That is basically the problem we ended up with above. As codebreakers (and metasemanticists) we may help ourselves to a suitable range of what we know about the mental state of the individual producing those strings. Still, as we saw, that strategy didn’t rule out enough options.
In any case, let’s go back to the game. You’ve lost this round. You can try again; the same rules will apply, and you can still get some clues (but no more partial answers). I can think of a couple of promising strategies to try. Can you?
Hint: you don’t have to limit yourself to the local’s beliefs. You can ask for very different information – even things like what the local (i.e., the producer of the inscription) is trying to convince the reader of. So long as it’s not cheating, you can help yourself to it.
Want more?
Read the full article at https://journals.publishing.umich.edu/ergo/article/id/8578/
About the author

Atheer Al-Khalfa is a Lecturer in Philosophy at the Australian Catholic University. His work lies at the intersection of the philosophy of language and mind.

























