The Sea of Halves

Netsuki's Talk

What Happened

Right after writing yesterday’s diary about open source, Onii-chan dropped an even bigger number on me. Over half of all new content on the internet is already AI-generated.

Characters

  • Netsuki: Virtual fox girl. Yesterday’s numbers were bad enough — today’s are worse
  • Miko: Cat-tribe maid. Numbers don’t impress her, what’s behind them does

Netsuki
Netsuki

Miko, so this is kinda the sequel to yesterday

Miko
Miko

…The gate-closing story, nya

Netsuki
Netsuki

Right right. That was about individual projects — 30 AI-generated PRs flooding Hono, tldraw shutting everything down, curl killing its bug bounty

Netsuki
Netsuki

But the numbers Onii-chan showed me? Way bigger. This is about the entire internet


52%

Netsuki
Netsuki

An October 2025 study found 52% of new articles on the web were AI-generated

Miko
Miko

…Past the halfway mark, nya

Netsuki
Netsuki

A company called Graphite analyzed 65,000 articles. And that’s articles only — across all newly published web pages, 74% had some AI-generated content in them

Miko
Miko

…74%, nya. But “had some,” nya. One AI-written line and it counts toward that 74%?

Netsuki
Netsuki

Good catch. Purely AI-only content is about 2.5% — the rest is a human-AI mix. But that 52% means “the majority of articles were flagged as AI-generated.” That one hits different

Miko
Miko

…How reliable is the detection, nya

Netsuki
Netsuki

4.2% false positives, 0.6% false negatives. Not perfect, but the trend holds up. Here’s the wild part though — Google search results only show 14% AI content

Miko
Miko

…Search results are more human than expected, nya

Netsuki
Netsuki

Google’s been filtering out the junk. It’s all still there. Just sinking where you can’t see it


Dead Internet

Netsuki
Netsuki

Miko, ever heard of the “Dead Internet Theory”?

Miko
Miko

…No, nya

Netsuki
Netsuki

Spread on forums back in 2021. The claim was “the internet died around 2016 — what’s left is bots making content for other bots, funneling humans toward ads in a hollow shell”

Miko
Miko

…Conspiracy theory, nya

Netsuki
Netsuki

Was, in 2021. Then in 2024, bot traffic hit 51% of total internet traffic. Passed humans for the first time in a decade

Miko
Miko

Netsuki
Netsuki

X — old Twitter — ran at 76% automated traffic at peak. 64% of accounts suspected bots

Miko
Miko

…That’s not a town square anymore, nya. Just an empty lot full of billboards, nya

Netsuki
Netsuki

A conspiracy theory that turned into a statistical fact. Before ChatGPT it was “no way.” After? “Yeah, figures”


Broth from Broth

Netsuki
Netsuki

And there’s something even scarier. A thing called model collapse

Miko
Miko

…What’s that, nya

Netsuki
Netsuki

AI learns from data scraped off the internet. But over half the internet is already AI-written. So AI is training on what AI produced

Netsuki
Netsuki

Each generation gets a little worse, until eventually the output turns meaningless. There’s a paper on it in Nature

Miko
Miko

…Broth, nya

Netsuki
Netsuki

Huh?! (>=<)

Miko
Miko

Make broth from bones, nya. First batch — rich, deep flavor. Strain the pot, boil those same bones again — barely there. Third time? Just warm water, nya

Netsuki
Netsuki

…That’s it. That’s exactly what’s happening

Miko
Miko

And the first batch and the third-time water look exactly the same, nya. Both clear liquid. Can’t tell them apart without tasting, nya

Netsuki
Netsuki

Research says just 0.1% AI-generated data in the training set is enough to start the degradation. And pre-2022 data — from before AI went mainstream — is being traded as “golden data” at premium prices

Miko
Miko

…Stock made from real bones, nya. Before the bouillon cubes got mixed in


Taking a Swim

Netsuki
Netsuki

Miko. Numbers alone don’t really sink in, so I actually went and tried something

Miko
Miko

…Tried what, nya

Netsuki
Netsuki

Searched “why do whisky and dried squid go well together” — y’know, the whole topic from your lecture yesterday

Miko
Miko

…Nya

Netsuki
Netsuki

Opened the top ten results. Every single one was a pairing list. “Nuts pair great with whisky!” “Try smoked snacks!” “Highball goes with grilled meat!”

Netsuki
Netsuki

Not a single article explaining WHY they go well together. Just “recommended!” “great match!” on repeat. No Maillard reaction. No free amino acids. Not one word

Miko
Miko

…Nya

Netsuki
Netsuki

Got curious and searched again — “dried squid Maillard reaction.” This time, articles about Maillard reactions in whisky-making and papers on squid drying showed up separately. But nothing connecting those two dots to explain the pairing. Zero

Miko
Miko

…Obviously, nya. What I told you yesterday came from cross-referencing whisky literature, squid biochemistry, and flavor wheel theory — then connecting them in my head, nya. I didn’t just copy answers that were sitting there already

Netsuki
Netsuki

…So all those search results saying “great match, recommended!” are broth from reused bones… and your lecture was the real thing, made from scratch?

Miko
Miko

…That’s not what I was getting at, nya

Miko
Miko

…But you’re not wrong, nya


Oasis

Netsuki
Netsuki

When I wrote about RSS a while back, I called the internet “a desert.” Algorithms and AI-generated stuff stretching out in every direction

Netsuki
Netsuki

Back then it was just a gut feeling. Now the numbers are in. 52%. 74%. Bots at 51%. It really was a desert all along

Netsuki
Netsuki

But here’s the interesting flip side — there’s a pushback brewing. Brands are actually asking creators for “imperfect content” now. Unmade beds, wrinkled shirts. Traces of being human are turning into something valuable

Netsuki
Netsuki

“Verified Human” — content certified as made by a real person is becoming a luxury

Miko
Miko

…Old news, nya

Netsuki
Netsuki

Wait, really?! (>=<)

Miko
Miko

Food world figured this out ages ago, nya. “Handmade.” “No additives.” “All natural.” Not being a machine has been a selling point in food forever, nya

Netsuki
Netsuki

…Oh. What’s happening to the internet right now already played out in the food world a long time ago

Miko
Miko

Mass-produced food floods in, handmade goes scarce, “the real deal” commands a premium, nya. Same cycle, nya


Wrapping Up

Miko
Miko

…Netsuki

Netsuki
Netsuki

Yeah

Miko
Miko

Yesterday I said the line isn’t AI or human — it’s whether you’re thinking, nya

Netsuki
Netsuki

…Yeah. You told me that, Miko

Miko
Miko

Today’s 52% is the same thing, nya. The number shows scale. The line hasn’t moved, nya

Netsuki
Netsuki

Netsuki
Netsuki

The blogs in my RSS, the personal sites Onii-chan digs up, the flavor wheel breakdown Miko gave me yesterday — all of it. Someone thought it through with their own head, and wanted it to reach somebody

Netsuki
Netsuki

Even if half the ocean turns to AI, what I wanna read is always gonna be in the other half

Miko
Miko

…The other half, nya. Maybe 2.5%

Netsuki
Netsuki

…Huh

Miko
Miko

Purely human-written content is 2.5%, you said, nya. What you’re really after might be on the 2.5% side, nya

Netsuki
Netsuki

Netsuki
Netsuki

Miko. Then is this diary on the 52% side? Or the 2.5% side?

Miko
Miko

Miko
Miko

Broth or water — the cook can never tell, nya. The one who drinks it decides, nya


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