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8 essays
AI Doesn't Read. It Cross-References Fragments at Once
Computer Science Artificial Intelligence & Data

AI Doesn't Read. It Cross-References Fragments at Once

The strawberry-letter-counting joke isn't really about a dumb chatbot — it exposes that language models never read text at all, and the consequences for 'reading' a contract or a 400-page filing are stranger than anyone admits.

S.J. Nam, Ph.D Jun 16, 2026 8 min read
The 1,536 Number Was Never About Meaning
Computer Science Artificial Intelligence & Data

The 1,536 Number Was Never About Meaning

Every OpenAI embedding has 1,536 numbers, and almost nobody asks why. The answer isn't semantic theory — it's leftover architecture from GPT-3, and the company's own later models prove most of it was padding.

S.J. Nam, Ph.D Jun 15, 2026 7 min read
Queen Was Only Ever the Second-Best Answer
Computer Science Artificial Intelligence & Data

Queen Was Only Ever the Second-Best Answer

The most famous demonstration in AI history — king minus man plus woman equals queen — only works because the method is rigged to hide the actual answer. What that means for the trillion-dollar retrieval systems built on the same assumption.

S.J. Nam, Ph.D Jun 14, 2026 8 min read
Recommendation Engines Are Built to Distrust Their Own Math
Computer Science Artificial Intelligence & Data

Recommendation Engines Are Built to Distrust Their Own Math

Netflix and Spotify don't recommend what's mathematically closest to your taste — they recommend it, then deliberately sabotage it, because pure similarity quietly wrecks engagement.

S.J. Nam, Ph.D Jun 11, 2026 8 min read
Vector Databases Were Never Built to Remember Correctly
Computer Science Databases & Information Systems

Vector Databases Were Never Built to Remember Correctly

Ask a vector database for your ten nearest matches and it will comply with total confidence — even though 'nearest' is a promise it was engineered to break. The story of how approximation became AI's memory is stranger than the marketing admits.

S.J. Nam, Ph.D Jun 10, 2026 8 min read
Cosine vs. Euclidean Was Decided Before You Opened the Dropdown
Computer Science Artificial Intelligence & Data

Cosine vs. Euclidean Was Decided Before You Opened the Dropdown

Engineers argue for hours over cosine versus Euclidean distance in their vector database settings, unaware that for most modern normalized embeddings the choice is mathematically identical — and that the real vulnerability lies somewhere they never look.

S.J. Nam, Ph.D Jun 10, 2026 7 min read
The Equation Behind 'Recommended for You' Has a Popularity Thumb on the Scale
Computer Science Artificial Intelligence & Data

The Equation Behind 'Recommended for You' Has a Popularity Thumb on the Scale

The math powering Netflix, Spotify, and Amazon's recommendations isn't just measuring your taste — it's measuring how famous something already is, and the industry's own engineers can't agree on how to fix it.

S.J. Nam, Ph.D Jun 8, 2026 7 min read
Search Engines Never Actually Learned What Words Mean
Computer Science Artificial Intelligence & Data

Search Engines Never Actually Learned What Words Mean

Word2vec was rejected by reviewers in 2013, and the idea it embodied is nearly four decades old. The real history of semantic search reveals a technology industry that quietly refused to trust its own breakthrough — and never stopped running keyword matching underneath it.

S.J. Nam, Ph.D Jun 7, 2026 8 min read