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Hacker News1 NanoChat – The best ChatGPT that $100 can buyAI coding tools limitations: Karpathy shared that AI coding assistants like Claude/Codex were "net unhelpful" for his project because it was "too far off the data distribution." Discussion reveals AI tools work well for common tasks like React apps or web development but struggle with novel/specialized code outside their training data.Training costs and accessibility: Debate over whether $100 training costs and H100 requirements democratize AI or perpetuate inequality. Some see it as progress from previous barriers, others worry about excluding those without cloud access. Discussion includes concerns about AI concentration in big corporations vs. open source traditions.Educational value and implementation: Users sharing experiences with nanoGPT as a learning tool, discussing practical applications like training on specialized datasets (MTG cards, psychology materials). Focus on understanding LLM fundamentals through hands-on coding rather than just using pre-trained models.
Reddit science1 Using scented products indoors changes the chemistry of the air, producing as much air pollution as car exhaust does outside, according to a new study. Researchers say that breathing in these nanosized particles could have serious health implications.Using scented products indoors, such as flame-free candles and wax melts, can create significant indoor air pollution comparable to car exhaust. Research by Purdue University found these products release nanosized particles that can penetrate deep into lungs and potentially enter the bloodstream, posing serious respiratory health risks. Misleading title scope: Discussion about how study only focused on wax melts but title suggests all scented products, with debate about whether findings could logically extend to other scented itemsHealth concerns from chemist: A chemist's perspective against using scented products leads to sharing of personal health impact stories, from COPD to cancer cases, and debate about necessity of artificial scentsAir purification solutions: Discussion of HEPA filters and other air purification methods as solutions, with debate about effectiveness against different types of pollutants like VOCs and nanoparticles
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