Thinkthen exist

A humble notebook — what I think, what I test, what I build, what breaks, and what I make of it.

Leiden, NL — written between builds

What I write about
01
RAG

Standard RAG Should Be a Tool, Not the Architecture

Why one-shot retrieval breaks on ambiguous and multi-step questions, and why standard RAG works better as a fast retrieval tool inside an adaptive agentic architecture.

21 October 2026
7 min read
02
GEO

GEO Is Not a Ranking. It Is Three Events You Can Measure.

Search rankings do not tell you whether an answer engine fetched your page, used it, or named you. Generative engine optimization starts by keeping those three events apart, and by refusing to treat a benchmark lift as a promise.

3 October 2026
4 min read
03
GEO

How I Make One Page Citable, and How I Check It

A citable page answers one question, puts the source next to the claim, and can be checked without pretending an unmeasured signal is a pass. Here is the method I actually use.

3 October 2026
4 min read
04
Jev

Can Jev Make Large-Scale Chat History Analysis Practical?

Jev is a newly released decision model from TypeSafeAI. I test whether its combination of seconds-scale classification, very low inference cost and usable semantic accuracy can make large-scale chat-history analysis practical.

24 September 2026
9 min read
05
RAG

Why AI Projects Die Between the Demo and Production

Confusion around enterprise AI integration is no longer unusual. Executives develop high expectations, a technical team produces an impressive demo within weeks, early users see the potential—and then the project gets close to production. Costs rise, latency appears, security questions surface, retrieval quality becomes inconsistent, and an architecture that worked for a handful of developers behaves very differently when hundreds of employees arrive.

14 September 2026
8 min read
06
RAG

Document Processing for Enterprise RAG

A company rarely has one document to connect to an AI system. It has hundreds of policies, contracts, scanned PDFs, technical reports, presentations, tables and Excel workbooks. From the outside, the task looks straightforward: upload the file, extract the text, split it into chunks and send it to a vector database.

5 September 2026
9 min read
07
EnterpriseAI

Enterprise AI Integration: From Prototype to Production

Over the past few years, I have seen many companies struggle with the same uncertainty around AI integration. Almost everyone agrees that AI represents a major transformation. Bringing it into business processes at the right time is now widely treated as a strategic priority.

3 September 2026
6 min read

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