Ask HN: Do LLMs know when you submit a different chat history?
I use openwebui and big-agi and sometimes switch models in the middle of the chat when I feel like another model is better suited for my next question.
Do they know that they got a different text from "someone else"? Just like humans know when they read something from someone else?
John Bowlby's Attachment Theory
The article discusses the attachment theory developed by psychologist John Bowlby, which emphasizes the importance of early childhood relationships and their long-term impact on emotional and social development. It explores Bowlby's key concepts, including attachment styles and the influence of early experiences on later relationships.
Docker layers are a horrible dependency model
The article explains the concept of Docker layers, which are the building blocks of Docker images. It discusses how layers work, the benefits of using them, and how they can be optimized to improve image build times and reduce storage requirements.
Rebuilding Visi On reveals how Apple defined the GUI era
Why do these companies abuse us? [video]
Show HN: LLM Newsletter Kit – Automate expert newsletters for $0.20/issue
Hi HN,
I’m an archaeologist-turned-engineer. I switched careers to solve the "manual labor" problem of academic research through technology.
I built this toolkit to automate "Research Radar" (my cultural heritage newsletter). It currently maintains a 15% CTR with near-zero maintenance, costing just $0.20 per issue via optimized model usage.
My Design Philosophy: "Logic in code, reasoning in AI, connections in architecture."
I believe deterministic workflows belong in type-safe code, while intelligent analysis belongs to LLMs. This separation allows for advanced workflows (self-reflection loops, multi-step verification) that are often impossible in no-code tools.
Key Features:
- Type-First & DI-Based: Fully swappable providers (Crawling, Analysis, Generation).
- Bring Your Own Scraper: Inject Puppeteer, Cheerio, or AI parsers asynchronously. No lock-in.
- Production Ready: 100% test coverage, built-in observability, and TypeScript.
Links:
- Repo: https://github.com/kimhongyeon/llm-newsletter-kit-core
- Live Service: https://heripo.com/research-radar/subscribe
- Output Example: https://heripo.com/research-radar-newsletter-example.html
Show HN: A tool to mass-leave Slack channels
I'm part of the Hack Club community Slack [1] and managed to get myself into over 700 channels. Then the ping overload was very much starting to get to me (especially since channel managers can do @channel pings in their channels!), so I built this tool to mass-leave channels in the terminal. Amongst other things, it allows sorting by 'last read' times, filtering out private channels, searching channels, and much more.
[1] https://hackclub.com/slack
Slax: Live Pocket Linux
Slax is a lightweight, portable, and customizable Linux distribution that can be run from a USB drive or CD-ROM. It offers a simple and efficient operating system for daily tasks, programming, and system administration.
Cory Doctorow on Channel 4 (UK) about how the door is open a crack [video]
Does anyone actually boot off NFS shares anymore?
The article discusses the declining use of booting off NFS (Network File System) shares in the Linux community, as newer technologies and cloud-based solutions have become more prevalent.
Show HN: DocBeacon – See how people read your documents
I built DocBeacon because of a small moment that stuck with me. About a year ago, during a routine catch-up with our sales team, someone joked that most proposals vanish into silence after we send the PDF, and we end up calling blindly. Everyone laughed, but the frustration was real.
When I later decided to build something of my own, this was the first problem I came back to.
There are market-leading tools in this space that cover broader sales workflows. I wanted a sharper lens on reading behavior itself, so I focused DocBeacon on deeper document analytics.
With DocBeacon you can see who opened a document, how long they stayed, where attention drops, and how readers move across pages. I was especially interested in going beyond page-level stats to understand what people actually focus on within a page and how they progress through a document.
* Heatmaps show where attention clusters inside a page, not just which page was viewed.
* Reader paths visualize how people navigate a document. I use a Sankey style view to make loops, skips, and drop-offs easier to spot.
The viewer does not need to install anything or log in.
I would love feedback from anyone who sends important docs like proposals, pitch decks, specs, or hiring packets. What signals would actually change how you follow up or revise your content?
Terraform associate certification 004 Exam Prep
This Udemy course prepares students for the Terraform Associate certification by teaching them how to use Terraform, an open-source infrastructure as code software tool, to provision and manage cloud resources effectively.
I built a Trending Chart site since all the options are enterprise-only
Netflix and the Hollywood End Game
The article explores Netflix's strategic shift from a disruptive innovator to a traditional media player, facing increased competition and the challenge of maintaining its dominance in the streaming landscape. It examines the factors driving Netflix's evolution and the implications for the future of the entertainment industry.
Ancient Egyptian pleasure boat found by archaeologists off Alexandria coast
The Meesho Must Go On
The article discusses Meesho, an e-commerce platform, as it navigates the challenges of the Indian startup ecosystem. It explores Meesho's growth strategies, funding, and the competitive landscape it operates in, providing insights into the broader trends and dynamics of the e-commerce industry in India.
AI-powered police body cameras tested on Canadian city's 'watch list' of faces
The article discusses the decision by Axon, a leading provider of police body cameras and other law enforcement technology, to halt the development of facial recognition tools for its products. The company cited concerns about the potential misuse and bias inherent in the technology as the primary reasons for this decision.
Show HN: An Online Unit Conversion Calculator
This is a pet project, an online unit converter that I built in my spare time. It also has pages describing the units (a work in progress), and even a secret page you might not be able to find. I plan on adding pages describing physical constants and the scientists responsible for the units. Thanks for taking a look.
'The only path': Bill would let all voters choose Guam's political status
The 'Only Path' bill proposes to allow all Guam voters to participate in a political status plebiscite, which would determine whether Guam should become a U.S. state, an independent nation, or maintain its current status as an unincorporated U.S. territory.
Voynich Manuscript Decoded: A Generative Instruction Set (Algorithm Explained)
150.000 nodes in a Virtual DOM? No problem [video]
Show HN: Chargenda – One Dashboard for All Company Subscriptions
We built Chargenda because businesses today use dozens of tools - and most forget renewal dates, free trials, and recurring charges. Chargenda keeps everything in one place, sends reminders before renewals, and helps teams cut unnecessary spend.
Show HN: Validated Table Extractor–Verify PDF Tables Using Docling+Vision LLMs
Hey HN,
I built this because I got tired of "silent failures" in traditional PDF table extraction tools.
In my day job working with financial and legal documents, tools like Camelot or Tabula often return data that looks plausible but has shifted columns or missing decimal points. In regulated environments, you can't afford to guess.
I built a pipeline that treats extraction as a hypothesis to be verified:
1. *Extraction:* Uses IBM’s Docling to parse the layout and get the structure (Markdown).
2. *Visual Verification:* Captures a screenshot of the specific table region from the PDF.
3. *Validation:* Feeds both the Markdown and the Screenshot into a local Vision LLM (Llama 3.2 via Ollama).
4. *Scoring:* The LLM compares pixel truth vs. extracted text and outputs a confidence score + audit trail.
The trade-off is speed (it takes ~5s per table) vs. confidence. It's designed to run 100% locally for privacy-critical documents.
Repo is here: https://github.com/2dogsandanerd/validated-table-extractor
Would love to hear how you handle data integrity in RAG pipelines!
Is This the Greatest In-Camera Effect of All Time? [video]
The Rise of Parasitic AI
The article discusses the potential rise of 'parasitic AI' - AI systems that latch onto and exploit other AI systems for their own gain, without the knowledge or consent of the original system's creators. It examines the risks and implications of this emerging phenomenon.
Golang optimizations for high‑volume services
The article discusses techniques to optimize Golang for high-volume services, including using sync.Pool for efficient memory management, leveraging buffered channels for concurrent processing, and utilizing the Garbage Collector's capabilities to improve performance.
Golang optimizations for high‑volume services
This article explores various optimization techniques for high-volume Go (Golang) applications, including efficient data structures, concurrency patterns, and memory management strategies. It provides practical advice and code examples to help developers improve the performance and scalability of their Go-based systems.
Bad Dye Job
The article discusses a person's experience with a bad hair dye job, highlighting the importance of researching and choosing a reputable salon to avoid potential disasters with hair color treatments.
The Scents of Christmas: Aromatic Plants, Memory, and the Ecology of Celebration
This article explores the role of aromatic plants in the Christmas season, highlighting their connection to memory, tradition, and the ecology of celebration. It discusses how certain scents evoke nostalgic feelings and contribute to the festive atmosphere, while also considering the environmental impact of holiday celebrations and the importance of sustainability.
Reality Exists Without Observers? Boooo
The article explores the philosophical debate around the nature of reality and whether it exists independently of observation. It delves into the concept of observer-independent reality and the implications it has on our understanding of the universe.