Why you can read a language but can't speak it

You've been at this a year or two. You can read a news article and get the gist. You follow a show with subtitles on and only lose the thread occasionally. On paper you know maybe two thousand words.

Then somebody asks you something and nothing comes out.

Almost everybody diagnoses this the same way. I need more vocabulary. So they go back and learn another five hundred words, and the next time it happens with a slightly bigger vocabulary. The diagnosis is nearly always wrong, and it's worth understanding why, because the wrong diagnosis sends you back to exactly the activity that caused the problem.

Knowing a word twice

There are two different things people call "knowing a word".

The first is recognition. You see ventana, you know it's a window. Something arrives from outside and you match it against what's in your head.

The second is retrieval. You're standing in a room, you need the word for the thing letting the light in, and you have to go and find it. Nothing arrives from outside. You start from the meaning and you have to come back with the word.

These feel like the same skill and they are not. You can have thousands of words available to the first one and a few hundred available to the second. That's not a failure of memory, it's what happens when you only ever practise in one direction.

Reading practises one direction. So does listening. So do most flashcards, which show you the word and ask what it means. Every one of those hands you the word first.

The part nobody trains

Now add the clock.

When you read, there is no deadline. You can stop on a sentence. You can go back to the start. You can look something up and nobody knows you did. If a sentence takes you forty seconds, it took forty seconds, and the page doesn't mind.

When someone asks you a question, you have about two seconds before the silence starts to feel like something. In those two seconds you have to work out what they said, decide what you think, find the words, put them in the right order, and get your mouth to produce them.

That's the actual difficulty. Not the size of your vocabulary. The deadline on getting at it.

And here's the thing about the deadline: no amount of reading applies one. You can put in a thousand hours of input and never once be made to retrieve anything at speed, so the retrieval side finishes roughly where it started. Meanwhile the reading gets easier and easier, which feels like progress, which is why people stay on it.

That's the plateau. It isn't that you stopped improving. It's that you kept improving at the half you were already good at.

Translating in your head is not a bad habit

People treat this one as a discipline problem. Stop translating, think in the language. Said as though thinking in a language were a decision.

It isn't a habit and you can't decide your way out of it. Translating in your head is just what retrieval looks like when it's slow. The route from meaning to word is there, it's simply not worn in, so your brain takes the road it knows: meaning, English word, translation, output. Three steps, each of them slow.

The route gets shorter by being used. Not by being avoided. Every time you go from a thing you want to say straight to saying it, badly and slowly, that path gets a little more direct. There is no shortcut where you decide to stop translating and it stops.

What actually closes the gap

Production. Out loud, against a clock, at something you can finish, over and over.

Each of those words is doing work, so take them one at a time.

Out loud, because typing lets you edit. You can sit on a written sentence for thirty seconds and fix it before anyone sees it, which trains a skill you'll never get to use in a conversation. Your mouth also needs the practice separately from your brain.

Against a clock, because retrieval speed is the whole problem. Practice with unlimited time improves accuracy and leaves speed exactly where it was.

At something you can finish, because "just have a conversation" is where most people stall. An open-ended chat has nothing to succeed at and no way to tell whether it went well, so you drift, and then you quietly stop. Give it an end instead. Order a coffee and ask for the bill. Book a table for four on Friday. Explain that the parcel never arrived. Small jobs with a clear finish line.

Over and over, and this is the one people skip. The first time through a situation you're inventing all of it at once. The fourth time you're not inventing anything, you're just saying it, and it comes out at speed. That's fluency, and you build it one situation at a time rather than all at once. Nobody becomes generally fluent. They become fluent at ordering food, then at small talk with a neighbour, then at explaining a problem on the phone, and one day the list is long enough that it looks general from the outside.

It's supposed to be bad at first

The first few attempts are slow and wrong and a bit humiliating, and that isn't a sign the method isn't working. That's the method. You're retrieving under load and failing and getting corrected, and that loop is the only thing that has ever moved a sentence from something you know into something you can say.

Most language products are built to spare you that feeling. Multiple choice instead of production. A hint before you've had to struggle. A score that goes up whatever you do. It makes them pleasant, and it removes the part that was doing the work. I've written more about why I built ours the other way round.

Where to start this week

Pick one situation you'll actually be in. Not a topic, a situation, with a beginning and an end. If you're learning Spanish, these are written that way: telling a hairdresser it's too short, making an allergy taken seriously, describing a symptom you have no word for.

Say it out loud. Not in your head, and not typed.

Do the same one four or five times rather than four different ones once.

Notice you're getting faster, not that you're getting it right. Speed is what you're training.

If you have nobody to do this with, that's the usual case and it's a solvable one. There's a longer piece on the options here, ranked by how much they actually help.

Or you can go and do it right now. It's free, it takes about a minute to start, and the first one is allowed to be terrible.