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I deleted my second brain

Two nights ago, I deleted everything. Every note in Obsidian. Every half-baked atomic thought, every Zettelkasten slip, every carefully linked concept map. I deleted every Apple Note I’d synced since 2015. Every quote I’d ever highlighted. Every to-do list from every productivity system I’d ever borrowed, broken, or bastardized. Gone. Erased in seconds. What followed: Relief. And a comforting silence where the noise used to be. For years, I had been building what technologists and lifehacker

c4wa – C compiler for Web Assembly

C compiler for Web Assembly ( c4wa ) This is a compiler from a subset of C language to Web Assembly. If you're not familiar with Web Assembly, check out Wikipedia article. Web Assembly is a new universal executable format for the Web; it complements more traditional JavaScript for computationally intensive tasks or if there is a need to port to Web existing code written in other languages. Binary Web Assembly files have extension .wasm ; throughout this document, WASM is used both as the name

Gear News This Week: The Repairable Fairphone 6 Arrives and Samsung's Galaxy Unpacked Is Up Next

The sixth generation of Fairphone arrived this week, featuring a modular design built to last from ethically sourced components in a climate-conscious way. It has been a couple of years since its predecessor, the Fairphone 5, and the Fairphone 6 is refreshingly smaller and lighter. It boasts a 6.3-inch OLED screen with a 120-Hz adaptive refresh rate, a Qualcomm Snapdragon 7s Gen 3 processor, and a 4,415 mAh battery that Fairphone says is good for up to two days. You also get a 50-megapixel main

ICE Rolls Facial Recognition Tools Out to Officers' Phones

WIRED published a shocking investigation this week based on records, including audio recordings, of hundreds of emergency calls from United States Immigration and Customs Enforcement (ICE) detention centers. The calls—which include reports of incidents of staff sexual assaults, suicide attempts, and head injuries—indicate a system inundated by life-threatening incidents, delayed treatment, and overcrowding. In a 6-3 decision on Friday, the US Supreme Court upheld a Texas porn ID law, finding th

C compiler for Web Assembly (c4wa)

C compiler for Web Assembly ( c4wa ) This is a compiler from a subset of C language to Web Assembly. If you're not familiar with Web Assembly, check out Wikipedia article. Web Assembly is a new universal executable format for the Web; it complements more traditional JavaScript for computationally intensive tasks or if there is a need to port to Web existing code written in other languages. Binary Web Assembly files have extension .wasm ; throughout this document, WASM is used both as the name

Reinforcement learning, explained with a minimum of math and jargon

It’s Agent Week at Understanding AI! This week I’m going to publish a series of articles explaining the most important AI trend of 2025: agents! Today is a deep dive into reinforcement learning, the training technique that made agentic models like Claude 3.5 Sonnet and o3 possible. Today’s article is available for free, but some articles in the series—including tomorrow’s article on MCP and tool use—will be for paying subscribers only. I’m offering a 20 percent discount on annual subscriptions

Huge Number of Crypto Users Suddenly Getting Terrifying Letters From the IRS

Crypto bros are freaking out amid a surge in letters from the Internal Revenue Service about their digital currency holdings. As Bitcoin.com and other sites report, there has been a whopping 758 percent spike in customer mentions of IRS letters over the past two months alone, suggesting that there may be a taxation crackdown in progress. We don't know exactly how many people have gotten these troubling letters — but apparently, there are a few different types going out. According to Coinledge

AT&T finally settles its 2019 and 2024 breaches: Are you eligible for a payout?

Edgar Cervantes / Android Authority TL;DR AT&T has settled two data breaches (from 2019 and 2022) for a combined total of $177 million. Affected customers could receive payments up to $5,000, though smaller amounts are likely unless significant losses are proven. Notifications will arrive between August and October, with claims due by mid-November, but payments aren’t expected until early 2026. Last year, AT&T confirmed it was the victim of a massive data breach involving customer data, call

Google Sends Out Bizarre Email Saying AI Will Now Control Your Phone's Apps

One of the most powerful tech corporations on earth has a message for Android users: its AI will soon be taking control of your phone. Android users have begun receiving ominous emails warning that Gemini, Google's proprietary large language model (LLM), will soon be able to "help you" with apps like Phone, Messages, and WhatsApp. Crucially, the emails note that Gemini will be able to "help" users regardless of "whether your Gemini Apps Activity is on or off" — which prompted some understandab

The rise of prompt ops: Tackling hidden AI costs from bad inputs and context bloat

This article is part of VentureBeat’s special issue, “The Real Cost of AI: Performance, Efficiency and ROI at Scale.” Read more from this special issue. Model providers continue to roll out increasingly sophisticated large language models (LLMs) with longer context windows and enhanced reasoning capabilities. This allows models to process and “think” more, but it also increases compute: The more a model takes in and puts out, the more energy it expends and the higher the costs. Couple this wi

Android phones could soon warn you of “Stingrays” snooping on your communications

Smartphones contain a treasure trove of personal data, which makes them a worthwhile target for hackers. However, law enforcement is not above snooping on cell phones, and their tactics are usually much harder to detect. Cell site simulators, often called Stingrays, can trick your phone into revealing private communications, but a change in Android 16 could allow phones to detect this spying. Law enforcement organizations have massively expanded the use of Stingray devices because almost every

YouTube adds more AI, but not everyone's happy about it

The big picture: Is YouTube becoming harder to navigate as the platform increasingly embraces AI-generated "slop"? As many users start to ask that question, the Alphabet-owned company is doubling down, introducing even more AI-powered features aimed at enhancing search and enabling conversational interactions. Google recently confirmed that two new AI features are coming to YouTube. The company says the updates are aimed at helping users find what they're looking for more quickly and efficientl

Slightly better named character reference tokenization than Chrome, Safari, FF

Slightly better named character reference tokenization than Chrome, Safari, and Firefox 2025-06-26 Note: I am not a 'browser engine' person, nor a 'data structures' person. I'm certain that an even better implementation than what I came up with is very possible. A while back, for no real reason, I tried writing an implementation of a data structure tailored to the specific use case of the Named character reference state of HTML tokenization (here's the link to that experiment). Recently, I to

Google’s carbon emissions just went up again

Google’s carbon emissions jumped yet again as the company continues to push ahead in AI. The company’s 2025 sustainability report emphasizes that its “ambition-based emissions” grew 11 percent last year to reach 11.5 million metric tons of carbon dioxide pollution, marking a 51 percent increase compared to 2019. That puts Google farther away from its goal of slashing planet-heating pollution in half by 2030 compared to a 2019 baseline. But what it calls “ambition-based” emissions excludes certa

OpenAI’s API lead explains how enterprises are already succeeding with its Agents SDK and Responses API

Join the event trusted by enterprise leaders for nearly two decades. VB Transform brings together the people building real enterprise AI strategy. Learn more At VentureBeat’s Transform 2025 conference, Olivier Godement, Head of Product for OpenAI’s API platform, provided a behind-the-scenes look at how enterprise teams are adopting and deploying AI agents at scale. In a 20-minute panel discussion I hosted exclusively with Godement, the former Stripe researcher and current OpenAI API boss unpac

Pokemon TCG Pocket's Eevee Grove Expansion Has Convinced My Partner to Play

I've been locked in on Pokemon TCG Pocket since day 1, and despite some reservations about how quickly new set expansions have been released, I log in at least twice a day to open my free packs. My girlfriend, on the other hand, stopped playing the game shortly after it came out. I was hoping that I could keep her engaged as my trading card buddy -- we met through playing Pokemon Go on the same college campus, and I pulled out my physical card collection during one of our first dates (I know, v

Best Grills for 2025: We Tested Dozens to Find the Best Grill in Every Category

We use thermocouples linked to computer software to measure internal grill temperatures. Brian Bennett/CNET We test the main types of grills differently, but for most, we include a high-heat test like searing steak or grilling burgers, a medium, indirect heat test like grilling a whole chicken for more than an hour and a low-and-slow test with racks of ribs. With over 30 grills tested, we've got this down to a tee. To determine what should be the best outdoor barbecue grill, we collect data inc

Apple's $95 million Siri settlement claims are ending soon - how to secure your payout

Elyse Betters Picaro / ZDNET Think that Apple's Siri snooped on your private conversations in the past? If so, you may be able to snag a slice of the $95 million that Apple is paying out to settle a class-action lawsuit. But you have to act fast, as the deadline to submit your claim is days away. Also: My favorite iPhone productivity feature just got a major upgrade with iOS 26 (and it's not Siri) A settlement page recently published in the case of Lopez v. Apple Inc. explains the steps and d

Microsoft changes Windows in attempt to prevent next CrowdStrike-style catastrophe

In the summer of 2024, corporate anti-malware provider CrowdStrike pushed a broken update to millions of PCs and servers running some version of Microsoft's Windows software, taking down systems that both companies and consumers relied on for air travel, payments, emergency services, and their morning coffee. It was a huge outage, and it caused days and weeks of pain as the world's permanently beleaguered IT workers brought systems back online, in some cases touching each affected PC individuall

This Eufy robot vacuum is half off before Prime Day

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . The Eufy 11S Max robot vacuum is on sale for $140 as part of an early Prime Day sale. That's half off, as the typical cost is $280 for this particular model. This is extremely close to a record-low price. This device made our list of the best budget-friendly robot vacuums. Perhaps the

Microsoft is trying to get antivirus software away from the Windows kernel

In the summer of 2024, corporate anti-malware provider Crowdstrike pushed a broken update to millions of PCs and servers running some version of Microsoft's Windows software, taking down systems that both companies and consumers relied on for air travel, payments, emergency services, and their morning coffee. It was a huge outage, and it caused days and weeks of pain as the world's permanently beleaguered IT workers brought systems back online, in some cases touching each affected PC individuall

This lesser-known T-Mobile discount may be on its way out the door eventually

Joe Maring / Android Authority TL;DR T-Mobile is phasing out its Philo and YouTube TV discount perk, though it might remain available for up to two more years. Customers will now pay Philo directly but receive reimbursement as a T-Mobile account credit. Those affected should monitor future communications from T-Mobile closely, as the offer might end earlier. If you’ve been with T-Mobile for a while, you might recall that it initially tried to break into the TV market with its TVision service

This Eufy robot vacuum is half for before Prime Day

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . The Eufy 11S Max robot vacuum is on sale for $140 as part of an early Prime Day sale . That's half off, as the typical cost is $280 for this particular model. This is extremely close to a record-low price. This device made our list of the best budget-friendly robot vacuums . Perhaps t

The Personalized Learning Revolution: An EdTech Insider’s Perspective

Back in the 90s, when I was in school, education was like a uniform everyone had to wear—the same textbooks, the same blackboard, and the same hurried lessons for all. If you fell behind, your only lifeline was to awkwardly raise your hand in the middle of class or spend hours in the library after school, rifling through reference books. Fast forward 30 years, and it’s fascinating how far we’ve come. Today, thanks to AI/ML, we have adaptive learning systems—tailored to each student based on thei

My air conditioner broke during a heat wave - and this portable AC saved the day

ZDNET's key takeaways The EcoFlow Wave 3 is a portable air conditioner and heater that costs $1,299 on its own and $1,399 with a battery, a limited-time discount This is a portable air conditioner and heater that is more powerful than its predecessor It is also off-grid ready for camping, RVing, and even helping in a pinch.The Wave 3 is pricey, loud in some settings, and is not as efficient in extreme heat, direct sun, or tent camping. $1,299 at Amazon Many parts of the US are sizzling right

M3gan 2.0 is a fun upgrade that’s a little too self-aware

is a reporter focusing on film, TV, and pop culture. Before The Verge, he wrote about comic books, labor, race, and more at io9 and Gizmodo for almost five years. Universal and Blumhouse’s first M3gan feature came out of nowhere with a premise so ridiculous and campy that it was hard not to be at least a little intrigued. Equal parts Child’s Play and Small Wonder, M3gan was undeniably silly with its story about an AI-powered doll who sang Sia’s “Titanium” and danced around as she chopped people

The best E Ink tablets for 2025

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . E Ink tablets have always been intriguing to me because I’m a longtime lover of pen and paper. I’ve had probably hundreds of notebooks over the years, serving as repositories for my story ideas, to-do lists, meeting notes and everything in between. However, I turned away from physical

Gemini in Google Sheets now lets you type a prompt to tell it exactly what to do

Jaque Silva/NurPhoto /Getty If you use Google Sheets for work, Gemini is about to make your life a lot easier. Also: Google's new free AI agent brings Gemini right to your command line - here's how to try it Sheets already has the capability for Gemini to assist with creating tables and formulas, generating graphs and charts, and handling tasks like conditional formatting, sorting, and filtering. Now you can enter a prompt in a cell to tell Gemini what you want to do. Also: Google Earth jus

You Can Still Watch YouTube Videos Offline. These Are the Easiest Ways

There's a good chance you've used -- and uploaded content to -- YouTube. According to research from the digital marketing firm Global Media Insight, over 2.7 billion people use the online video platform every month. YouTube says over 20 billion total videos have been uploaded to its platform, with over 20 million videos uploaded every day. If you're going somewhere with limited internet or trying to conserve data -- like hopping on a plane -- you might want to download some YouTube videos to en