# Google and Stanford engineers just dropped a 39-page PDF on what actually mak...
Canonical: https://social-archive.org/yena/wuAd3hRx3R
Original URL: https://x.com/Mnilax/status/2069771486450024898
Author: Mnimiy
Platform: x
## Content
Google and Stanford engineers just dropped a 39-page PDF on what actually makes an AI agent self-improve. input → output → feedback → update → repeat the number it opens with: only 9% of agents run a real loop. the other 91% is a human typing the next prompt by hand. their case: a loop isn't a vibe, it's three hidden choices - starting artifact - credit horizon - experience batching i spent weeks getting these three right. now my loop runs while i sleep and rewrites its own skill file so it never asks me twice. the paper says why 91% of loops quietly die. the article is the one that didn't.