# Rauch predicts AI will rewrite most human-made software

> Original title: We will all be learning in coming weeks & months, that most human-made software:

- Source: Guillermo Rauch
- Published: 2026-11-05T02:22:14.000Z
- Bad Influence: https://badinfluence.news/items/xlg1ejtxeueezh05gjvztjf80
- Original: https://x.com/rauchg/status/2118166970273292299

## Summary

Guillermo Rauch says most human-made software is slow, insecure, and under-specified, and predicts AI will rewrite it to be faster, more secure, and better documented. He says AI will formally verify, load test, and harden software, and turn memory-unsafe code into robust, optimized code.

## Post

We will all be learning in coming weeks & months, that most human-made software:

▫️ Was really slow
▫️ Had many security vulnerabilities
▫️ Was under-specified and incorrect

AI will rewrite it all. Many times. It will make it fast, cost-efficient, and secure. It will think about failure modes we couldn't wrap our heads around.

It will prove, formally verify, load test, harden. It will turn memory-unsafe foundations into robust, optimized ones. If you ask, it'll thoroughly document it, teach you about it, make diagrams, animations, and slide decks.

In many ways, we are witnessing the true birth of software engineering.