Human feedback?  I'm surprised he didn't just feed the project into a Ralph loop... 🤣

Pretty good article 

> Claude Code falls short if you don't have a great methodology. It needs feedback loops to work fine; otherwise, it derails. One possible feedback loop is a human reviewing code and testing manually. But there's a better/complementary approach if you want it to work autonomously. On both Elo and Bmg.js, I've started by making sure the testing methodology was effective and scientifically sound. Claude writes the tests, executes them, discovers where it's wrong, and corrects itself. Impressive."

chaoticalHeavy

Bernard Lambeau, the human half of a pair programming team, explains how he's using AI

Bernard Lambeau, a Belgium-based software developer and founder of several technology companies, created a programming language called Elo with the help of Anthropic's Claude Code.

Starting on December 25, 2025, he published a series of posts about the project. The first post names Claude as a co-author.

"In roughly 24 hours of collaboration, we built a complete expression language with a parser, type system, three compilers, a standard library, a CLI tool, and a documentation website. Not bad for a day's work,” Lambeau and Claude 

"Elo isn't just a demonstration that AI can write code. It's a demonstration that humans and AI can build together – each contributing what they do best,” they added.

> **Bernard Lambeau, the human half of a pair programming team, explains how he's using AI**
>
> Bernard Lambeau, a Belgium-based software developer and founder of several technology companies, created a programming language called Elo with the help of Anthropic's Claude Code.
>
> Starting on December 25, 2025, he published a series of posts about the project. The first post names Claude as a co-author.
>
> "In roughly 24 hours of collaboration, we built a complete expression language with a parser, type system, three compilers, a standard library, a CLI tool, and a documentation website. Not bad for a day's work,” Lambeau and Claude [wrote](https://elo-lang.org/blog/20241225-building-elo-with-claude/).
>
> "Elo isn't just a demonstration that AI can write code. It's a demonstration that humans and AI can build together – each contributing what they do best,” they added.
>
> [**...read more at theregister.com**](https://www.theregister.com/2026/01/24/human_ai_pair_programming_elo/)