RAG for Legacy Systems: 7,432 Pages to 3s Answers
This article discusses the challenges of legacy systems and how organizations can address them. It explores the concept of 'technical debt' and provides strategies for modernizing legacy systems, such as adopting cloud-based solutions and leveraging microservices architecture.
WorldChaosMap: A live map of global instability
VPN Comparison Spreadsheet
Show HN: A lightweight, native macOS menubar app for monitoring with mini graphs
SystemPulse is an open-source performance monitoring tool that collects and visualizes system metrics, enabling users to analyze and troubleshoot their infrastructure. It provides a comprehensive dashboard to monitor CPU, memory, disk, network, and other system-level data.
Software Design Principles That Matter
This article discusses five fundamental software design principles: SOLID, DRY, KISS, YAGNI, and GRASP. It explains how these principles can help developers create more maintainable, scalable, and efficient software systems by promoting code organization, modularity, and simplicity.
The '3.5% rule': How a small minority can change the world
The article explores the concept of 'social tipping points,' where a small percentage of people (around 35%) can spark widespread social change. It discusses how this phenomenon has been observed in various historical and contemporary movements, and the implications for driving positive societal transformations.
Watch This Futuristic Windshield Melt Ice Almost Instantly
The article discusses a new windshield technology that can melt ice and snow almost instantly, using a thin, transparent heating element embedded in the glass. This innovative system could significantly improve driving safety and visibility in cold weather conditions.
Gemba
Gemba is a Japanese business principle that emphasizes the importance of going to the actual work site or place where value is created, in order to better understand the processes and make informed decisions for improvement.
PickYourVC: Find the right VC for your next round
The article provides an overview of the venture capital industry, offering insights into the key players, investment trends, and strategies that startups should consider when seeking funding from VCs. It explores the role of VCs in supporting innovative companies and the factors that influence their investment decisions.
Semantic Attacks: Exploiting What Agents See
The article discusses 'semantic attacks' - attacks that exploit the meaning and context of language rather than just its literal content. It explores how these attacks can be used to deceive and manipulate people, and the challenges in defending against them.
Guinness Adverts Project on Irish Film Institute's Archive Player
The article discusses the Irish Film Institute's project to digitize and preserve Guinness advertisements from the 1950s to the 1990s. The project aims to highlight the cultural and historical significance of these iconic advertisements that have become a part of Ireland's visual heritage.
Stackmaxxing for a recursion world record [video]
Turn Your Android into a Dumb-Phone
The article discusses how to transform an Android smartphone into a 'dumbphone' by disabling or removing unnecessary features and apps, thereby reducing distractions and promoting a more focused and minimalist mobile experience.
Show HN: Promo/offer code sharing and discovery for apps
Proffer is an open-source front-end framework that provides a comprehensive set of tools and features for building responsive and scalable web applications. It offers a modular and customizable design, making it suitable for projects of various sizes and complexity.
Show HN: Sentinel – Zero-trust governance for AI Agents
Hi HN,
I’m a software engineer and I’ve been building agentic workflows lately. Like many of you, I got concerned about giving LLMs "write access" to tools. Whether it's a payment API, a database deletion, or a simple email send, the risk of a hallucination causing a $5k mistake is real.
I wanted a way to keep a human in the loop without rewriting my entire agent logic every time. So I built Sentinel.
It’s a lightweight Python layer that wraps any tool/function. The key principles I focused on:
Fail-secure by default: If the rules engine or the network fails, the action is blocked. Most systems fail-open, which is a nightmare for security.
Zero-trust Decorator: You just add @protect to your functions. It’s agnostic to the framework (works with LangChain, CrewAI, or raw OpenAI calls).
Semantic Anomaly Detection: Beyond static JSON rules (like "max $100"), it uses a Z-score analysis of historical audit logs to flag unusual behavior—like an agent suddenly trying to call a function 100 times in a minute.
Context-Aware Approvals: The approver sees exactly what the AI saw (the state before the action) to make an informed decision.
It’s open source (MIT) and just launched on PyPI: pip install agentic-sentinel
I’d love to hear your thoughts on the "Fail-secure" approach and how you guys are currently handling AI tool governance in production. I'm here to answer any questions!
Repo: https://github.com/azdhril/Sentinel
Autonomous language-image generation loops converge to generic visual motifs
The article presents a new artificial intelligence model that can generate high-quality, context-aware summaries of long-form text across a diverse range of domains, outperforming existing state-of-the-art models in both content and quality.
Be Skeptical of Solving AI Alignment with Vibes
The article explores the controversial practice of summoning, where individuals attempt to conjure supernatural entities. It examines the historical roots, ethical debates, and growing popularity of this esoteric art, while acknowledging the lack of scientific evidence supporting its efficacy.
Show HN: Lochle, a Wordle clone for Scottish Lochs
Show HN: 500-cycle runtime test for long-horizon LLM coherence
We ran a 500-cycle benchmark to test long-horizon reasoning stability in large language models — not just output quality, but whether a model can maintain coherent identity and logic across hundreds of recursive reasoning steps.
This is part of our SIGMA Runtime project — a cognitive control layer that runs on top of any LLM and tracks drift, coherence, and identity persistence in real time.
---
Why we did this
Most LLM evals measure short reasoning spans — 1-10 turns. But when a model is asked to sustain a line of reasoning over hundreds of steps, subtle feedback effects appear:
- Semantic drift: meaning slowly shifts as text compounds. - Crystallization: the model locks into repeating its own phrasing or style. - Identity loss: the “speaker” loses internal consistency.
We wanted to see whether it’s possible to prevent these effects at runtime, without retraining or prompt resets.
---
What’s new here
We replaced the older ACE anti-crystallization layer with a new system called AEP (Adaptive Entropy Protocol) — a real-time regulator that injects controlled entropy into model outputs.
AEP tracks three internal metrics: - TI — Terminological Isometry (consistency of key concepts) - SDC — Semantic Drift Coefficient (meaning variation rate) - L/N — Logic-to-Noise ratio (logical density vs surface variation)
When the model becomes too stable (repetition, rigid phrasing), AEP adds micro-perturbations to restore variation. When it drifts too far, it dampens entropy back into equilibrium.
---
How we tested it
- 500 reasoning cycles per model (OpenAI GPT-5.2 & Gemini-3-Flash Preview) - Every 50th cycle = a Rib Point that compresses and verifies the last 49 steps - Continuous telemetry from the runtime (coherence, drift, entropy) - Identity: same synthetic agent (“LEO”, AI architect/cognitive scientist)
---
What happened
Both models completed all 500 cycles without identity loss or semantic collapse. Entropy modulation increased lexical variety, while keeping reasoning trajectories coherent.
When truncations occurred (Gemini API), the runtime reconstructed missing context using prior compression checkpoints.
---
Visual results
Drift & coherence evolution (500 cycles) GPT-5.2: https://files.sigmastratum.net/Leo_OpenAI_D_summary_dashboar... Gemini-3-Flash: https://files.sigmastratum.net/Leo_Gogle_D_summary_dashboard...
AEP metric dynamics (TI, SDC, L/N) GPT-5.2: https://files.sigmastratum.net/Leo_OpenAI_E_metrics_timeline... Gemini-3-Flash: https://files.sigmastratum.net/Leo_Gogle_E_metrics_timeline....
---
Takeaway
- Entropy can be regulated, not just randomized. - LLMs can maintain self-consistent reasoning over hundreds of cycles when given runtime feedback. - Structural stability (coherence, terminology, logic) doesn’t require retraining — only a dynamic control layer.
---
Report (DOI): https://doi.org/10.5281/zenodo.18271591 Code & appendix: https://github.com/sigmastratum/documentation
---
We’d love technical feedback on: - Runtime-level coherence control - Measuring “identity persistence” - Long-horizon reasoning tests (100+ turns)
The Possessed Machines: Dostoevsky's Demons and the Coming AGI Catastrophe
Notes for January 19-25 (My Coding Agent Sandboxing Setup)
This article explores the future of technology, discussing the potential advancements in areas such as artificial intelligence, virtual reality, and sustainable energy solutions, and how these innovations may shape our lives in the coming decades.
Canada
The article explores the unique features and characteristics of Canada, discussing its diverse landscapes, multicultural society, and progressive policies. It provides an informative overview of the country's history, culture, and contributions to the global community.
Show HN: Make custom ASCII art t-shirts from your terminal
I wanted to build my first CLI app and was inspired by terminal.shop (the coffee one). Figured if you can order coffee from your terminal, you should be able to order a t-shirt too.
how it works: you describe what you want, it generates ASCII art, shows you a mockup on an actual shirt, and you can check out right there.
pip install ascii-tee
ascii-tee "sunflower"
Stack:- CLI: Typer + Rich for the interactive flow (prompts, spinners, panels)
- ASCII generation: Claude API, with a system prompt tuned for a 40×30 character canvas that prints well
- Preview: Pillow composites the ASCII (rendered with JetBrains Mono) onto a shirt mockup template
- Terminal images: Detects iTerm2/Kitty/WezTerm for native inline images, falls back to timg or chafa, then browser
- Backend: Cloudflare Workers handling API calls
- Checkout: Stripe, with the preview image shown on the payment page
- Fulfillment: Printful prints and ships (Bella+Canvas 3001)
First time building something like this so would appreciate any feedback.
Stop Saying Boredom Is Good for Kids
The article discusses the concept of boredom and how it can be a valuable experience that leads to creativity and personal growth. It explores the potential benefits of embracing boredom and offers strategies for harnessing its power to enhance one's life and work.
Tim Cook taps John Ternus to oversee Apple's design teams
According to a report, Apple CEO Tim Cook has quietly tapped John Ternus, Apple's current hardware engineering chief, to oversee the company's design teams, signaling a potential shift in leadership and the direction of Apple's product design.
Robert Moreno and the use of ChatGPT that defined his time at Sochi
The article discusses how Robert Moreno, the former manager of the Spanish national team, utilized ChatGPT during his time at Sochi, a Russian Premier League club. It highlights how Moreno leveraged the AI assistant to enhance his coaching strategies and player analysis, though the extent of its impact is examined.
AI Tribalism
The article discusses the increasing tribalism and polarization surrounding artificial intelligence (AI) development, with some viewing it as a threat to humanity while others see it as a transformative technology. The author argues that this tribalism can hinder progress and calls for a more balanced, nuanced approach to AI discourse.
Another rabbit hole: Paperless-ngx
The article explores Paperless-ngx, an open-source document management system that allows users to digitize and organize their paperwork. It discusses the benefits of using Paperless-ngx, including improved document organization, reduced physical storage, and enhanced search capabilities.
Ramp vs. Brex: How the underdog won
This article compares the business credit card offerings of Ramp and Brex, highlighting how Ramp, the underdog, has surpassed Brex in several key areas such as customer satisfaction, product features, and market share despite Brex's initial industry dominance.
Show HN: Helping my band rehearse remotely without installing a DAW
Hey everyone,
I built an app called SingTogether because I was tired of trying to get my bandmates to install complex DAWs just to practice over a demo. I wanted something that works instantly in the browser.
It’s designed to help bands and choirs practice and collaborate using their own multitracks.
The Main Use Cases:
1. Rehearsing a Song
The Problem: Sending MP3s back and forth is messy, and you can't isolate instruments.
The Solution: The band leader uploads multitracks to the app and sends a link. The team opens it (on phone or desktop) and can practice using standard tools like solo, mute, pan, and volume faders to isolate their specific part.
2. Asynchronous Jamming
The Problem: We want to experiment with ideas but can't meet up.
The Solution: A band member adds a base track (instrumental or vocal). They send the invite link, and other members can record a vocal or instrumental part straight from the browser. Everyone can listen to the layered contributions immediately.
I'd love for you to try it out and let me know what features would make your practice sessions easier.