David Heinemeier Hansson
Creator of Ruby on Rails
The famously contrarian creator of Ruby on Rails and co-founder of 37signals spent years dismissing AI autocomplete as a joy-killer — then declared AI agents “the most exciting thing we’ve made computers do since we connected them to the internet.”
Why this score
How the formula works →- +4.3proUses AI in their work
- +2.6pro3 pro-AI statements (fervent)
- −0.9anti1 anti-AI statement (measured)
Weights, statement counts, the ×1.25 multiplier for having a stake in an AI-impacted field, and the formula’s smoothing are already baked in — the points add up to the score, with evidence on the other side subtracting: Firmly Pro-AI · 6.0/10
In his words
This is the most exciting thing we’ve made computers do since we connected them to the internet back in the ’90s.
It’s more like working on a team and less like working with an overly-zealous pair programmer who can’t stop stealing the keyboard.
They’re fully capable of producing production-grade contributions to real-life code bases.
Biography
David Heinemeier Hansson (born 1979), universally known as DHH, is the Danish programmer who created Ruby on Rails in 2004 — the framework behind Shopify, GitHub, Airbnb, and Basecamp — and co-founded 37signals, where he remains CTO. He is also a Le Mans class-winning race driver, a best-selling author (“Rework,” “It Doesn’t Have to Be Crazy at Work”), and one of the industry’s most reliable contrarians on everything from venture capital to cloud computing.
From joy-killer to mech suit
His AI arc makes the conversion notable. Through 2024 and much of 2025 he was openly unimpressed by autocomplete-style coding assistants, telling Lex Fridman in 2025 that he had turned off in-editor AI completion because predicting his next keystroke interrupted the craft and joy of programming — even as he happily used LLMs as a conversational tutor beside the editor.
What changed was agents. In a January 2026 HEY World post, “Promoting AI agents,” he wrote that the leap AI agents took in 2025 was “simply incredible” — that working with terminal-based agents feels like working with a team rather than a keyboard-stealing pair programmer, and that they now produce production-grade contributions to real codebases. Gergely Orosz’s Pragmatic Engineer newsletter documented the new workflow: DHH now starts most coding tasks by dispatching an agent, reviewing the result rather than typing the code.
True to form, the enthusiasm comes with edges: he still insists on reading and owning what ships, and has spent decades warning against outsourcing taste. But when the industry’s loudest skeptic of tooling fads compares a technology to the arrival of the internet, developers noticed.
Quote sources
- HEY World, 2026(world.hey.com)
Sources & further reading
Canonical record: https://battlelines.ai/topic/david-heinemeier-hansson
