Ian Reppel

home search insights topics fiction contact about

1,350 Days with Logseq

I liked Logseq for almost four years, but SQLite over plain Markdown ruined it.

26 Apr 2026

Agent-Assisted Schema Evolution

Automating backwards-compatible schema evolution could recover almost $4 million in engineering capacity for a typical tech platform company.

23 Apr 2026

Crossfire: Multi-Agent Adversarial Refinement

What if Ralph Wiggum had friends?

21 Apr 2026

A Dojo for Human Interactions

What does it take to build an AI rehearsal system where the measure of success is that people stop using it?

06 Mar 2026

The AI Benchmark Trap

What does benchmark supremacy have to do with operational reliability?

05 Mar 2026

PMF: Product/Market Folklore

Ask a product manager about PMF and they will almost certainly rattle off the Sean Ellis test with its 40% threshold. What few realize is that it’s mostly rubbish.

17 Feb 2026

The Quantum Cradle

What if the origin of life was not a one-in-a-zillion fluke, but a physical inevitability, solved by Earth’s crust acting as a quantum search engine?

15 Feb 2026

Reimagining Private Health Insurance in Argentina

What if private health insurance in Argentina is broken on purpose? ReSalud is a blueprint for a buildable digital insurer: regulated infrastructure with a product surface, an operating model, and unit economics that work!

21 Jan 2026

The Mind as a City

Consciousness is best understood as a system, not a single entity.

18 Jan 2026

Ralph Wiggum as a Degenerate Evolutionary Search

Ralph Wiggum works because it is a degenerate evolutionary search algorithm.

18 Jan 2026

The Missing Middle of Machine Learning Infrastructure

The hard part of machine learning is not serving features but deciding what they are.

13 Jan 2026

Define Once, Rewrite Anyway

A feature in machine learning is only defined once—until you demand it be correct.

12 Jan 2026