You’ve noticed it, even if you haven’t said it out loud. The word ‘soy sauce’ is disappearing from everyday conversation. Walk into any kitchen and you’ll hear: ‘Pass me the light soy sauce’ or ‘Grab the dark soy sauce’ — rarely just ‘soy sauce.’ This isn’t a random quirk. It’s your brain running a ruthless efficiency audit on your vocabulary.
Here’s the rule your brain follows: When a big category has only two or three common subcategories, the big word gets fired. Think about it. You say ‘I’m eating beef’ and ‘I’m eating fish,’ but when was the last time you said ‘I’m eating poultry’? Never. You say ‘chicken’ or ‘turkey’ because those are the only two birds you actually eat. Beef and fish don’t have well-defined subcategories that everyone uses. ‘Poultry’ does — so the word ‘poultry’ is laid off from your daily speech.
Same with fruits. You barely say ‘berries’ anymore. It’s ‘strawberries, blueberries, raspberries.’ The superordinate term is a middle manager with too few direct reports. A word without enough direct reports gets laid off.
Now look at soy sauce. It has exactly two common subordinates: light and dark. That’s a tiny team. Your brain sees that and thinks: ‘Why keep the boss around when the employees do all the work?’ So ‘soy sauce’ gets demoted. You still use it when you’re being generic, but in the heat of conversation, you reach for the specific.
But here’s the twist. The empty slot doesn’t stay empty forever. It gets hijacked by a completely new job. Remember the word ‘family’? In big cities, with smaller households and fewer generations living together, ‘family’ used to mean aunts, uncles, cousins, grandparents. Now, when you see a lost kid, you ask: ‘Where are your parents?’ Not ‘Where is your family?’ Because ‘family’ has become just parents. The word’s cognitive slot was nearly empty — so it got repurposed. The empty slot doesn’t stay empty. It gets hijacked. Now ‘family’ has a new life online: ‘Hey, family!’ meaning an entire internet community. Same word, brand new job.
This is happening all around you, right now. Your brain is a ruthless corporate CEO, and your vocabulary is the org chart. Words with too few subordinates are quietly pink-slipped. Their positions are quickly filled by new functional needs — like ‘family’ becoming a social media greeting, or ‘soy sauce’ splitting into two distinct products.
Why does this matter? Because it reveals that language evolution isn’t random. It’s a cognitive economy. Every time you drop a superordinate term, you’re not just being lazy. You’re optimizing. And every time a word gets a second life, you’re watching a new social reality being born. Your brain is a ruthless corporate CEO, and your vocabulary is the org chart.
So next time you catch yourself saying ‘light soy sauce’ instead of ‘soy sauce,’ smile. You just fired a word. And somewhere, another word is waiting to take its place.
FAQ
Q: Isn't this just a trivial language change? Why should I care?
A: It's a window into how your brain optimizes for efficiency. The same mechanism explains why slang emerges, why old words get new meanings, and how social structures directly reshape your vocabulary. It's not trivial — it's the hidden engine of how we think and communicate.
Q: What's the practical takeaway from this principle?
A: Pay attention to which words you're using less often. They're telling you something about cultural shifts. If a superordinate term is fading, it means the category has become too narrow. If it's getting a new life, a new social function has emerged. You can predict linguistic trends by watching the 'org chart' of your vocabulary.
Q: Isn't this just linguistic evolution that has always happened? What's new here?
A: Yes, language always changes. But the 'middle manager' framework gives you a concrete, predictive model. It explains why some words die and others are reborn — and it shows that it's not random. It's a cognitive economy of attention. Knowing this, you can see the invisible forces shaping your own speech.