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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 Cyberhttps://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 1.3https://developer.meta.com/ai/models/muse-spark/https://news.ycombinator.com/item?id=49541256Can 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-traininghttps://news.ycombinator.com/item?id=49535284Three sites made 215,128 “best software” pages for AI. Perplexity cites themhttps://trellner.com/reports/manufactured-sources-behind-ai-recommendations/https://news.ycombinator.com/item?id=49536375Google avoids a breakup of its ad tech businesshttps://www.nytimes.com/2026/09/02/technology/google-ad-tech-remedies.htmlhttps://news.ycombinator.com/item?id=49537131Biggest dark matter detector spots a single weird particlehttps://www.science.org/content/article/world-s-biggest-dark-matter-detector-spots-single-weird-particlehttps://news.ycombinator.com/item?id=49536079Aging brains blend memories together instead of just forgetting themhttps://studyfinds.com/aging-brains-blend-memories-together-instead-of-forgetting-them-study-finds/https://news.ycombinator.com/item?id=49535548Exit the Cavehttps://turtlespace.blog/p/exit-the-cavehttps://news.ycombinator.com/item?id=49536606Fable 5.1 World Modelinghttps://github.com/PhiloLabs/fable51-worldshttps://news.ycombinator.com/item?id=49541458Reverse Engineering Unknown File Formats with ImHexhttps://werwolv.net/posts/file_format_reverse_engineering/https://news.ycombinator.com/item?id=49508608 What is Hacker News Highlights? Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.