9.3.26 | Gemini 3.8 Flash and Cyber, Muse Spark 1.3, opt out of training data

This is a recap of the top 10 posts on Hacker News on Sep 3, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

(00:00) - Intro

(00:19) - Gemini 3.8 Flash and 3.8 Flash Cyber

(02:05) - Muse Spark 1.3

(03:25) - Can I opt out of my input or output data being used for training?

(04:38) - Three sites made 215,128 “best software” pages for AI. Perplexity cites them

(06:12) - Google avoids a breakup of its ad tech business

(07:39) - Biggest dark matter detector spots a single weird particle

(08:44) - Aging brains blend memories together instead of just forgetting them

(10:08) - Exit the Cave

(11:22) - Fable 5.1 World Modeling

(12:42) - Reverse Engineering Unknown File Formats with ImHex

(13:51) - Outro

Gemini 3.8 Flash and 3.8 Flash Cyber https://blog.google/innovation-and-ai/models-and-research/gemini-models/3-8-flash-and-3-8-flash-cyber/ https://news.ycombinator.com/item?id=49537553Muse Spark 1.3 https://developer.meta.com/ai/models/muse-spark/ https://news.ycombinator.com/item?id=49541256 Can I opt out of my input or output data being used for training? https://help.mistral.ai/en/articles/455207-can-i-opt-out-of-my-input-or-output-data-being-used-for-training https://news.ycombinator.com/item?id=49535284 Three sites made 215,128 “best software” pages for AI. Perplexity cites them https://trellner.com/reports/manufactured-sources-behind-ai-recommendations/ https://news.ycombinator.com/item?id=49536375 Google avoids a breakup of its ad tech business https://www.nytimes.com/2026/09/02/technology/google-ad-tech-remedies.html https://news.ycombinator.com/item?id=49537131 Biggest dark matter detector spots a single weird particle https://www.science.org/content/article/world-s-biggest-dark-matter-detector-spots-single-weird-particle https://news.ycombinator.com/item?id=49536079 Aging brains blend memories together instead of just forgetting them https://studyfinds.com/aging-brains-blend-memories-together-instead-of-forgetting-them-study-finds/ https://news.ycombinator.com/item?id=49535548 Exit the Cave https://turtlespace.blog/p/exit-the-cave https://news.ycombinator.com/item?id=49536606 Fable 5.1 World Modeling https://github.com/PhiloLabs/fable51-worlds https://news.ycombinator.com/item?id=49541458 Reverse Engineering Unknown File Formats with ImHex https://werwolv.net/posts/file_format_reverse_engineering/ https://news.ycombinator.com/item?id=49508608