top 10 hacker news stories for 2025-09-21

Quicksort explained IKEA-style

https://idea-instructions.com/quick-sort/

1 year ago

They Thought They Were Free (1955)

https://press.uchicago.edu/Misc/Chicago/511928.html

1 year ago

Sj.h: A tiny little JSON parsing library in ~150 lines of C99

https://github.com/rxi/sj.h

1 year ago

AI was supposed to help juniors shine. Why does it mostly make seniors stronger?

https://elma.dev/notes/ai-makes-seniors-stronger/

1 year ago

Meta exposé author faces $50k fine per breach of non-disparagement agreement

https://www.theguardian.com/technology/2025/sep/21/meta-expose-author-sarah-wynn-williams-faces-bankruptcy-after-ban-on-criticising-company

1 year ago

Amazon to end commingling after years of complaints from brands and sellers

https://www.modernretail.co/operations/amazon-to-end-commingling-program-after-years-of-complaints-from-brands-and-sellers/

1 year ago

LaLiga's Anti-Piracy Crackdown Triggers Widespread Internet Disruptions in Spain

https://reclaimthenet.org/laligas-anti-piracy-crackdown-triggers-widespread-internet-disruptions

1 year ago

iFixit iPhone Air teardown

https://www.ifixit.com/News/113171/iphone-air-teardown

1 year ago

Spectral Labs releases SGS-1: the first generative model for structured CAD

https://www.spectrallabs.ai/research/SGS-1

1 year ago

DXGI debugging: Microsoft put me on a list

https://slugcat.systems/post/25-09-21-dxgi-debugging-microsoft-put-me-on-a-list/

1 year ago