Hacker News on 4 November 2026

• There is no posttraining data commons - The article argues that while the pretraining of large language models (LLMs) benefited from a shared dataset created for various purposes,...
• Ask HN: What is Google Flights' business model and has it changed recently?
• People Against Genocide Smash Military Satellites on Balfour Anniversary
• Prompting Is Programming
• Ask HN: What is the best non mainstream programming language or stack in 2026?