# roon argues AI models should be designed, not grown

> Original title: designed and not grown

- Source: roon
- Published: 2026-11-02T20:27:57.000Z
- Bad Influence: https://badinfluence.news/items/ibw8lyvlhd8abdoztyium62qi
- Original: https://x.com/tszzl/status/2117353038935728307

## Summary

roon (@tszzl) posts that neural networks should be designed and not grown, with no further detail in the post. The post is a short statement without figures, product names, or supporting evidence.

## Post

designed and not grown

## Quoted post @rikiyatakehi

> We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math.
> It directly changed only 0.016% of weights, fixing 0.8B's reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training.
> 
> We call this Weight-Space Programming: frontier LLMs can now natively read/write neural network weights! 🧵
> Blog: https://rikiyat.github.io/blog/weight-space-programming/

https://x.com/rikiyatakehi/status/2117313742891327994