Measuring Input Latency on Linux: X11 vs. Wayland, VRR, and DXVK

https://marco-nett.de/img/blog/click2photon-board.jpg
Developed a hardware tool to measure Linux gaming latency, finding VRR and dxvk-low-latency reduce latency more than X11 vs Wayland differences. XWayland adds ~3ms latency, while optimizations like VRR and low-latency pacer improve performance by 0.2-0.5ms, with real gains in smoothing frame pacing.

Your 'app' could have been a webpage (so I fixed it for you)

https://bcdn.danq.me/_q23u/2026/07/http-toolkit-intercepting-640x359.png
The user reverse-engineered the Travelbound app to replace it with a webpage, criticizing its unnecessary app format, ads, and bloat. They argue web pages are more efficient, accessible, and user-friendly for simple content delivery.

Are we offloading too much of our thinking to AI?

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Rising reliance on AI for decisions, from trivial to complex, risks eroding autonomy, as seen in Ken Liu's "Tilly" and the "Microphone Man" who offloads thinking to Claude. While AI boosts efficiency, balancing automation with critical thinking—like the author's sister exploring Portugal's history—prevents over-reliance and preserves intellectual engagement.

Show HN: Opening lines of famous literary works

"Once upon a time and a very good time it was there was a moocow coming down along the road and this moocow that was coming down along the road met a nicens little boy named baby tuckoo."

How to stop Claude from saying load-bearing

https://jola.dev/images/og/posts/how-to-stop-claude-from-saying-load-bearing.png
Tired of Claude's jargon like "honest takes"? Use the MessageDisplay hook script to swap terms for humor. Install it in ~/.claude/hooks/wordswap.sh, add to settings.json, and customize—share your swaps or support the author @jola.dev.

The Tower Keeps Rising

https://lucumr.pocoo.org/social/2026-07-13-the-tower-keeps-rising-social.png
I feel that some vibecoded software changes somewhat randomly and unexpectedly. That made me think about Bruegel’s “The Tower of Babel” which shows an already quite chaotic depiction of the Tower of Babel. The story is usually told as one about pride and ambition and ultimately why people no longer speak the same language. But it is also a story about the unity that makes technological ...

Kontigo (YC S24) Is Hiring (Head of Security)

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Principal Security Engineer/ Security Engineering Lead/ CISO "Men wanted for hazardous journey. Low wages, bitter cold, long hours of complete darkness. Safe return doubtful. Honour and recognition in event of success" You gotta be in founder mode.

Show HN: Juggler – an open-source GUI coding agent, by the creator of JUCE

https://opengraph.githubassets.com/5763f5012af91577995e1a8d5195c861a57016277ddc694cab98b45317340697/juggler-ai/juggler
Juggler offers a GUI workbench for visual, interactive control of LLM codebase workflows via branching session trees, plugins, and editable context. It supports cross-platform collaboration, local/remote access, and integrates with major models like Claude, OpenAI, and Gemini.

Launch HN: Agnost AI (YC S26) – Extract user feedback from agent conversations

https://agnost.ai/framer-assets/images/djbJRqx6BPCqS00nvdHgj84EeE.png
Agnost AI analyzes real user conversations to identify agent failures and user pain points, generating actionable fixes via reviewed PRs. It enhances agent performance by uncovering hidden issues, improving conversions, and accelerating improvements through collaboration.

A tiny cell that broke a big rule of biology

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Oceanographers Jon Zehr and Kyoko Hagino independently discovered a symbiotic relationship where nitrogen-fixing bacteria evolved into an organelle within algae, defying the rule that only simple organisms can fix nitrogen. Their collaboration revealed this partnership, offering new insights into natural nitrogen cycles and potential agricultural innovations.

Beautiful Type Erasure with C++26 Reflection

rjk::duck uses C++26 reflection to streamline type erasure, automating vtable generation and overload resolution while supporting customization and performance optimizations like inlining. Its reflection-based design eliminates boilerplate, enabling ergonomic syntax and efficient runtime behavior in a single-header library.

Paxos Made Simple (2001)[pdf]

Paxos ensures fault-tolerant consensus in distributed systems by having proposers, acceptors, and learners agree on values via majority voting, preventing conflicting decisions. It applies consensus to state machine replication, allowing servers to execute commands reliably even with failures.

Superoptimizer – A Look at the Smallest Program

Punch yourself in the face with reality

In the AI era, success hinges on confronting reality by focusing on meaningful progress rather than overbuilding with AI tools, which often lead to wasted efforts. The key is relentlessly pursuing truth and impact, not escaping into AI-generated illusions.

Show HN: I RL-trained an agent that trains models with RL (for –$1.3k)

https://raw.githubusercontent.com/Danau5tin/ai-trains-ai/main/assets/hero.png
An AI agent trained via RL to optimize AI training using RL, open-sourcing weights, code, and GPU orchestration. It improves over 54 steps with a 0.63 reward peak, using Tinker and Prime-RL, and releases a LoRA adapter for Qwen3.6-35B-A3B under Apache-2.0.

S&P downgrades Oracle to BBB – only one notch above junk level

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S&P downgraded Oracle to BBB- due to AI-driven debt and OpenAI dependency, risking speculative status. BIS warns AI investment debt parallels past crises.

How the FSF sysadmins block botnets with reaction

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The FSF combats DDoS attacks and scrapers using tools like fail2ban, ipset, and ultimately reaction, a custom-configured solution that efficiently scales IP bans and automates defenses, supported by community contributions. By analyzing botnet traffic patterns and optimizing configurations, they mitigate threats while sharing improvements to strengthen free software infrastructure.

European "age verification" "app" forcing everyone to use Android or iOS

https://opengraph.githubassets.com/f1580dc9bacd32ad4acdcc213fc8d112df7554ede35dfc56df051eb6980bd598/eu-digital-identity-wallet/av-doc-technical-specification/discussions/19
In the README, the following is listed: App and device verification based on Google Play Integrity API and Apple App Attestation I would like to strongly urge to abandon this plan. Requiring a depe...

Australian energy retailers must provide three hours of free daytime electricity

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From July 2026, NSW, SA, and SE Queensland households with smart meters can access three hours of free midday electricity daily via the Solar Sharer Offer, capped at 24 kWh to ensure fairness. The scheme, designed to offset solar surplus, allows renters and non-solar users to save up to $1,100/year by shifting energy use to free windows, with automation maximizing savings.

The Agentic Loop: Three loops in a trench coat

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Agent loops in agentic systems consist of three layers: the inference loop (LLM-generated responses), tool loop (executing/modeling tool calls), and human loop (approval/steering). These loops enable functional AI agents by combining LLM reasoning, tool interaction, and human oversight.

The zero-cost fallacy: open-source software in the agentic era

https://www.thoughtworks.com/content/dam/thoughtworks/images/illustration/brand/tw_illustration_24.jpg
We’re living through the friction points of an architectural shift that has been decades in the making, but has accelerated sharply under the pressure of generative AI. For years, the software engineering industry has operated on a comfortable, perhaps lazy, myth: that open source software is an infinite, self-renewing public good that costs nothing to consume and requires nothing to sustain. ...

Alternative(s) to run CUDA on non-Nvidia hardware

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A metallurgist's doubts about self-replicating probes

https://www.centauri-dreams.org/wp-content/uploads/2026/07/Peter-Marinko-1.jpg
Peter Marinko argues that self-replicating von Neumann probes face insurmountable challenges in materials processing, thermodynamic closure, and long-term durability, not propulsion or AI, making interstellar replication infeasible. These limitations, rooted in industrial process complexity and material degradation, suggest the galaxy's silence may stem from replication's inherent difficulty, ...

Our Amish Language

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The Amish community's modernization has eroded Pennsylvania Dutch, driving my oral history project to document linguistic and cultural shifts. Intergenerational changes, English integration, and evolving identities reveal a complex transition from tradition to contemporary life.

Germany set to restrict its Freedom of Information Act

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German lawmakers approved reforms to restrict the Freedom of Information Act, limiting access to individuals, raising fees, and excluding organizations, sparking criticism over transparency. Civil society and opposition warn the changes undermine public oversight and trust, with the SPD vowing to block transparency rollbacks.

No Spanish reading crisis?

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A 2025 Spanish study shows 66% of Spaniards read for pleasure, with 76% of 15-24-year-olds defying the myth that youth don’t read. Despite digital challenges, Spain’s readership has risen since 2017, contrasting with declines in the US.

Indian scientists produce most detailed 3D atlas of the human brainstem

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Scientists at IIT-Madras created Anchor, a detailed 3D brainstem atlas linking MRI and cellular data, offering insights into neurological disorders. By mapping 200+ cell clusters affordably, it bridges macro and micro brain studies, aiding disease research and surgery.

Tensor Is the Might

https://zserge.com/images/tensor/tensor.png
This article details building a C-based tensor library with CPU/GPU (via Metal) support, covering tensor operations, memory management, and GPU-accelerated matrix multiplication. It implements manual backpropagation for training neural networks, achieving 97% MNIST accuracy, emphasizing performance and low-level control over frameworks like PyTorch.

Differentiable Fortran with LFortran and Enzyme

https://docs.pasteurlabs.ai/projects/tesseract-core/latest/_images/enzyme-pipeline.png
The usual answer is to rewrite it all in jax or pytorch. but this is what it actually looks like when you try it out - a simple 2d heat conduction step loop in plain vanilla fortran 90 with no annotations or ad-aware constructs. the whole pipeline runs during tesseract build, about 30 seconds end to end. if you want to use this in production, you’ll need to write

The git history command

The user struggles with Git's complex parallel workflows and explores jj but finds Git's new `history` commands (fixup, reword, split) promising for painless history rewriting without switching tools. While limited by merge conflicts and stateful operations, these atomic, branch-aware features reduce the need for jj's advanced conflict handling, offering incremental improvements within Git's ecosystem.