Why Learning a Language Takes So Long

Some thinking out loud from learning Japanese.

Progress feels slow, and most days it feels invisible. Other skills don't seem to take this long. Most people learn to ride a bike in an afternoon or two. So why does a language take years?

It helps to compare it with how much exposure we had to our first language.

Count the repetitions#

Think of the phrases we "just know": "Welcome!", "Hello!", "How was your day?", "Have you eaten?"

Some of them we may have been taught, but mostly we just heard them over and over. Hearing "have you eaten?" even once a day for twenty years comes to over seven thousand times.

Think of how many times we've stood in a queue, heard the person in front order food, and understood exactly what was going on. Or the TV ads we sat through as kids, and the jingles many of us can still sing word for word without ever trying to learn them.

None of it felt like learning. It was background, heard in context, thousands of times, until understanding it took no effort at all. By age five, a child has already logged over ten thousand waking hours of it.

Then, as adults, we meet a word a few times in an app or a textbook and wonder why it hasn't stuck.

Every phrase is its own skill#

This is where the bike comparison breaks down. Riding a bike is one skill. Once it clicks, it works on every bike and every road.

A language is thousands of small skills. Every common phrase needs its own repetitions before it becomes automatic. Getting comfortable with いらっしゃいませ (the welcome shop staff call out when you walk in) does nothing for いただきます (said before a meal).

If there's a closer comparison, it might be learning an instrument. Every chord, scale, and passage needs its own practice, and it takes years before you stop thinking about your fingers and start thinking about the music.

It also gets slower as you go. The most common words come up constantly, so they collect their repetitions fast, and early progress can feel quick. After that, each new word is rarer: it shows up less often, takes longer to stick, and adds less to what you can follow.

Paul Nation estimated that following about 98% of spoken English takes a vocabulary of 6,000 to 7,000 word families. The most common thousand or so words cover a large share of everyday speech, and each thousand after that covers less.

That's also why progress feels invisible. A bike has one noticeable moment, when you first stay upright. A language has thousands of smaller ones, and the day a phrase stops needing translation usually passes without notice.

Fluent doesn't mean not thinking#

It's common to describe fluency as speaking without thinking. I don't think that's quite right.

Riding a bike isn't thoughtless either. We think about where we're going, how fast, and when to brake. What we don't think about is the mechanics. To turn right on a moving bike, you briefly steer left first. It's called countersteering, and most riders do it without realising.

Speaking a native language works the same way. We think constantly while talking: about what we want to say, how it'll land, who we're talking to. What we don't think about is how: the word order, the verb endings, which particle goes where.

So what I'm aiming for is to think only about what I want to say, not how to say it. Once the mechanics drop out of attention, what's left is a feel for whether something sounds right.

That feel is compressed experience. It comes from a lot of repetition in context.

What I take from this#

• Aim for feel over recall. Memorising words has its place, but the goal is recognising what sounds right, not being able to explain why.
• Meet words in context. One sentence gives one angle on a word; the same word across many situations builds a fuller sense of it. It's a big part of why I'm using Duolingo.
• Expect slow, quiet progress. Progress comes from showing up across many days, and most of it happens in steps too small to notice.