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GPT-5 Is Making Huge Factual Errors, Users Say

It's been just over a month since OpenAI dropped its long-awaited GPT-5 large language model (LLM) — and it hasn't stopped spewing an astonishing amount of strange falsehoods since then. From the AI experts at the Discovery Institute's Walter Bradley Center for Artificial Intelligence and irked Redditors on r/ChatGPTPro, to even OpenAI CEO Sam Altman himself, there's plenty of evidence to suggest that OpenAI's claim that GPT-5 boasts "PhD-level intelligence" comes with some serious asterisks.

Show HN: Bicyclopedia

Welcome! This is an interactive exploration of the parts of a bicycle. If you're reading this message, the images may still be loading. If you are using a screen reader or have Javascript disabled, unfortunately you won't be able to see the images or animations of the parts, but you can still read the descriptions and source code here and read more about this project here. Thank you for visiting!

Building a computer in the 90s (2019)

Last Updated on March 19, 2024 by Dave Farquhar Building a computer in the 90s was different than it is today. It wasn’t just harder or more expensive. It seemed like every new build was an adventure. I probably built a few hundred systems before the decade ended, but the first few were definitely the most memorable. One in particular stands out above the rest. It was 1996. My friend Tom wanted a modern computer that was capable of handling photography work. He was in his early 20s at the time

Ars Technica System Guide: Five sample PC builds, from $500 to $5,000

Sometimes I go longer than I intend without writing an updated version of our PC building guide. And while I could just claim to be too busy to spend hours on Newegg or Amazon or other sites digging through dozens of near-identical parts, the lack of updates usually correlates with "times when building a desktop PC is actually a pain in the ass." Through most of 2025, fluctuating and inflated graphics card pricing and limited availability have once again conspired to make a normally fun hobby a

Ars Technica System Guide: Four sample PC builds, from $500 to $5,000

Sometimes I go longer than I intend without writing an updated version of our PC building guide. And while I could just claim to be too busy to spend hours on Newegg or Amazon or other sites digging through dozens of near-identical parts, the lack of updates usually correlates with "times when building a desktop PC is actually a pain in the ass." Through most of 2025, fluctuating and inflated graphics card pricing and limited availability have once again conspired to make a normally fun hobby a

Ford's Answer to China: A Completely New Way of Making Cars

I first thought Ford CEO Jim Farley was briefing me on a new car. It turned out to be something altogether more ambitious: A completely new way to make a car. Or, more precisely, EVs. “No one's ever built a car in three pieces then fit them together at the end,” Farley says. “We build the front, rear, and middle. We build the whole middle, front, and the rear—and then, at the end, we put it together. No one's ever built a car that way.” That approach stands in stark contrast to the usual way c

Topics: car ford new parts way

Fine-tuned small LLMs can beat large ones with programmatic data curation

{ "systemInstruction" : { "role" : "system" , "parts" : [ { "text" : "# Retail agent policy As a retail agent, you can help users cancel or modify pending orders, return or exchange delivered orders, modify their default user address, or provide information about their own profile, orders, and related products. - At the beginning of the conversation, you have to authenticate the user identity by locating their user id via email, or via name + zip code. This has to be done even when the use

The second-gen Apple Watch is now ‘obsolete’, but don’t get confused

Five years after Apple stops selling a product, it may become ‘vintage’, meaning Apple will still repair it. Five years after that, it can become ‘obsolete,’ and Apple no longer offers hardware service or parts. Today’s that day for the Apple Watch Series 1. Here’s what that means Wait, is it the Series 1, or the 2nd-gen Apple Watch? In a nutshell, both. They’re the same picture device. When Apple released the original Apple Watch in 2015, it didn’t have a Series number. The next year, when Ap

Open source BOM management (for me)

Since graduating from university I’ve gotten more and more into embedded software development. This has even spilled over into designing PCBs (printed circuit boards) for my embedded devices to sit on. Initially I had assumed that the leap from software to hardware design would be insurmountable without any formal education but it turned out to be quite enjoyable. It turned out that the problem I’d be facing wasn’t a technical one, but of an organisational nature. Designing circuits Designing

Hand: open-source Robot Hand

Project is licensed under Apache 2.0 Mechanical design is licensed under a : Creative Commons Attribution 4.0 International License. Amazing Hand project Robotic hands are often very expensive and not so expressive. More dexterous often needs cables and deported actuators in forearm i.e.. Aim of this project is to be able to explore humanoid hand possibilities on a real robot (and Reachy2 is the perfect candidate for that !) with moderate cost. => Wrist interface is designed for Reachy2's wr

Tired of upgrading your phone? This sustainable Android lets you do your own repairs

If you're tired of your phone being out of date every two years, there may finally be an answer. The Fairphone (Gen. 6) is here, and while it might appear at first glance to be a generic, midrange Android phone, its design is something unique. Also: Why I recommend this budget Android phone to most people over Samsung and Google Like the Fairphone (Gen. 5) that debuted in 2023, the latest Fairphone is focused on sustainability. The company uses ethically sourced materials, pays fair wages to

Tired of upgrading your phone? This new, sustainable Android lets you do your own repairs

Fairphone If you're tired of your phone being out of date every two years, there may finally be an answer. The Fairphone (Gen. 6) is here, and while it might appear at first glance to be a generic, midrange Android phone, its design is something unique. Also: Why I recommend this budget Android phone to most people over Samsung and Google Like the Fairphone (Gen. 5) that debuted in 2023, the latest Fairphone is focused on sustainability. The company uses ethically sourced materials, pays fai

Poop Transplants Not All They’re Cracked Up to Be

Fecal transplants have emerged as a potential treatment for a wide range of conditions, including irritable bowel syndrome, diabetes, and even depression. These so-called poop transplants have understandably received a lot of attention, but new research casts a bit of a wet blanket over the practice. The procedure involves taking microbes from the poop of a healthy person and transferring them into a patient’s colon. This should restore balance to their gut microbiome, but according to a study

It’s Raining SpaceX Debris in Poland

If you happened to be awake and looking at the sky at around 3:30 am in Northern Europe on Wednesday, you got quite the show. It was around that time that a Space X Falcon 9 rocket was making an uncontrolled reentry into the Earth’s atmosphere, with the fiery debris spotted in the sky by residents in Denmark, Sweden, and England, per the BBC. But it was Poland that got to see the aftermath up close and personal, as what is believed to be parts of the rocket crash-landed across the country. Jasn