2023-03-29
Exploring the Physics & Design of Bicycles
The article explores the physics and design of bicycles, focusing on factors such as weight, efficiency, and stability. Commenters discuss counterintuitive turns on bikes and other vehicles, as well as experimental designs and the significance of understanding different types of bike efficiency. Chains on bicycles wear down over time rather than stretching, and early iterations of bikes had pedals on the front wheel or were push-based balance bikes. The article delves into the principles of force and motion and how they apply to cycling, explaining the balanced forces acting on a coasting bicycle and rider, and the forces needed for acceleration and braking. The self-stabilizing behavior of bicycles is discussed, including the role of friction, gyroscopic effect, and trail effect, as well as the influences on bicycle stability such as geometry and tire size. The design of bicycle frames is also explored, including the different forces exerted on the frame and the importance of optimizing the design to counter these forces. Various resources for understanding bike physics, including interactive explainer animations and modeling of bike dynamics, are recommended by commenters. Overall, the article and ensuing discussion emphasize the complexity of bicycle mechanics and the significance of understanding the underlying physics for designing safe and efficient bikes. Discuss on Discussion Service or Read Original Text.
Paypal's "Alep" Key Restriction Raises Security Concerns
PayPal restricted an account for invoicing a key with the sequence "ALEP", causing concerns about their verification methods. The company's verification method uses questions from public databases dating back 20 years, raising concerns about the potential for security breaches. Users have reported difficulties verifying their identities and shipping addresses during the checkout process. PayPal's mandatory funds-holding policy has drawn criticism from sellers who argue it puts their funds at risk indefinitely. PayPal's system of automatically flagging and restricting accounts for certain words in transaction descriptions has led to conflicts and account freezes. Some customers suggest alternatives like virtual credit cards offered by challenger banks or Amazon Payments. Generating random alphanum license keys may be a solution to producing secure and unblockable license keys. Users who get life-banned from PayPal have their account cancelled and their Zelle account banned for life, with no recourse against automated bans. A discussion about spam emails suggests frustration with the prevalence of spam in email inboxes and the challenges of navigating financial services like PayPal. Discuss on Discussion Service or Read Original Text.
Apple Launches Classical Music Streaming Service
Apple has launched a classical music streaming service, Apple Music Classical, with improved metadata management and a tailored user experience for classical music listeners. Some users have concerns about the impact of streaming services on the struggling classical music industry, while others believe they can offer a better experience and promote discoverability. AI-generated music may lack the emotion and interpretation that human composers bring to their work, and some worry that it trivializes the creative process and diminishes the value of art. There is a debate on the role of automation and AI in manufacturing and creative fields, with some believing that humans will lose all commercial value once AI becomes proficient at creating commercially viable products. Apple Music Classical features a powerful search function that allows users to find recordings of classical works by composer, opus number, or key; it offers a high audio quality and over five million tracks. The app is available worldwide, excluding certain countries, and is included at no extra cost with all Apple Music subscriptions except for the Apple Music Voice Plan. Discuss on Discussion Service or Read Original Text.
Cerebras Open-Sources Compute-Efficient Language Models for NLP
AI accelerator company Cerebras has open-sourced compute-efficient language models for natural language processing, trained on its wafer-scale system CS-2 using the Chinchilla formula. The release includes three large LLMs comprising 46 billion parameters, boasting state-of-the-art performance on the SuperGLUE benchmark, and seven GPT models with seven to 13 billion parameters. The latter uses a new scaling law and achieves optimal loss per unit of compute across all model sizes. The technology allows independent scaling for model size and cluster size, and inference can be done on GPUs, but training requires dedicated hardware such as the CS-2. The open source models will be available on Hugging Face for pre-training and fine-tuning purposes Discuss on Discussion Service or Read Original Text.
Criticism of Eu's Proposed Chat Control Bill over Privacy Infringement
The EU Commission's proposed Chat Control Bill is facing criticism for potential privacy and freedom of expression infringements. The draft proposal includes requirements for messaging providers to automatically monitor and analyze users' conversations for illegal content and report suspicious behavior. Critics argue that the bill is not effective in preventing illegal actions and that the EU Commission has not taken the time to understand what it's proposing. Some comments touch on broader political and social issues, such as the nature of peaceful protests and the limitations of free speech. Legal language can be complex and intentionally difficult to interpret, making it harder for average individuals to bypass the law. The EU's discussion of proposals for the removal of end-to-end encryption has been met with criticism from technical experts, as secure communication is key for privacy. The EU's proposed Chat Control Bill aimed at preventing and combating child sexual abuse has been criticized for its potential misuse and invasion of privacy. Ylva Johansson, head of the scrutiny group on Europol, emphasized the need to monitor encrypted communication to protect children from child sexual abuse, but also acknowledges the challenges of ensuring compliance with privacy standards and limitations of available technology. Discuss on Discussion Service or Read Original Text.
Amazon Flags Frequently Returned Products to Protect Customers
Amazon flagging frequently returned products to protect customers and encourage retailers to improve product quality and descriptions. Concerns about fraudulent behavior by sellers on Amazon, including rewriting old product entries to game ranking algorithms and buying items to leave negative reviews. Suggestions to address the issue include marking previous versions of listings and using heuristics or AI to detect significant changes. Amazon's struggle with product fraud is slowly damaging its reputation, but suggestions for resolution have been put forward, including charging for listing changes or using AI and natural language processing to identify fraudulent changes. The problem with product reviews on Amazon is that sellers can change product listings, resulting in reviews being associated with the wrong item. Commenters on Hacker News discuss challenges with buying products on Amazon, including concerns around counterfeit products, unresolved issues with returns, and unreliable supply chains. Amazon is stepping up efforts to crack down on fraudulent listings by warning customers of suspected counterfeit items and introducing a warning label to flag frequently returned products. Amazon is testing a new warning tag on its product listings to identify items that are frequently returned by customers, which could lead to higher storage and disposal costs. Discuss on Discussion Service or Read Original Text.
Debates Surrounding US Healthcare Transparency & Access
Hacker News users question accuracy of health insurance "transparency data" intended to show hospital charges and insurer payments. Frustration expressed with opacity of healthcare costs and perceived inability for consumers to negotiate prices. Varying emergency room wait times reported, with some individuals waiting for hours without care, and high healthcare costs discussed. Discussion on inefficiencies of US healthcare system and potential benefits of a single-payer system in article comments. Lack of public transparency and complex billing systems make it difficult for patients to determine cost of care. MRFs containing insurance rates for medical procedures are seriously flawed, making data unusable for transparency. DoltHub offering data bounty and compiling hospital standard charge data into a relational database for public access. Discuss on Discussion Service or Read Original Text.
Open-Source Chatbot Trained on 800k GPT-3 Generations
Open-source chatbot Gpt4all trained on over 800k GPT-3 generations with LLaMa. Creates better generative models with higher quality data set. Can be used to generate English descriptions of code to produce insights on a codebase. Releases of open-source language models like GPT-4 and Alpaca benefit the open-source community. LoRA language model available on GitHub for generating text with prompt control, but may have slower download speeds and disproportionate topics. Controversy around ownership and copyright violations with LLaMA model. ChatGPT open-source conversational AI model by Nomic AI trained with LLaMa 7B dataset. Provides exercise and CSS code, movie plot idea, and iambic pentameter poem with a Caesar salad reference. Discuss on Discussion Service or Read Original Text.
Iceland Offers Remote Work Visa for High Earners
Iceland is introducing a remote work visa for high earners, with an income requirement of at least ISK1.3m ($10,000) per month. The visa aims to attract self-sufficient individuals to stimulate the economy and diversify beyond tourism. Commenters debate whether the income requirement is fair, given tax differences and the high cost of living in Iceland. The visa is open to nationals of around 50 countries, excluding developing countries, and does not provide a pathway to permanent residency. Applications must be submitted in paper form with appropriate supporting documents and fees. Some commenters express reservations about Iceland's climate and isolation. Discuss on Discussion Service or Read Original Text.
Microsoft Software Frustrates Users with Lack of Control & Performance
Windows users frustrated with lack of control over updates, poor performance, bugs in Visual Studio. Some users recommend trying Windows 10 LTSB, while others suggest using alternative tools like JetBrains' CLion or Rider for C++ and C# development. Debate over perceived biases of GNU/Linux on Hacker News, with some rejecting non-free software and others finding it convenient. Comments on Microsoft software vary from positive to negative, with some criticizing loss of control over devices and others praising productivity. Discussion on maintaining open-source software forks, ethical implications of non-free software, and comparing support experiences between Windows and Linux. Debate on Microsoft's business tactics in the 90s, anti-competitive practices, and Excel's success as a program. Some commenters criticize Microsoft for prioritizing security over freedom and argue for switching to Linux or other alternatives to avoid proprietary software problems. Free Software Foundation warns of Microsoft's surveillance and control of user activities through its products and services, including data collection and restrictions on software and functionality. Discuss on Discussion Service or Read Original Text.
Federal Reserve Facing Operating Losses & Concerns
The Federal Reserve has reported operating losses of $42 billion since September 2022, with monthly losses averaging $7 billion. Some believe that the announcement of these losses could be a way to manipulate public opinion and influence the Fed's decision-making processes. The recent rate hikes by the Federal Reserve in response to rising inflation have been controversial, particularly among those who argue they disproportionately harm low-wage workers. The Fed's actions are complex, and it is not productive to view them as just "dumb villains.". The current losses are causing concern about the Fed's long-term financial stability, but Chairman Jerome Powell has reassured the public that the bank has enough tools to manage any issues. The Fed is incurring losses due to its policies during the pandemic, weakening its ability to efficiently manage the economy. The debate about the government's role in providing public services and programs has arisen, with some arguing for more fiscal responsibility and accountability. Different perspectives are presented regarding the impact of economic policies on society, including deficits, ROI, and widening inequality. The comments showcase a range of perspectives on the role of taxation, government control, and currency stability. Money must be stable, accepted by institutions needed for business, and a medium of exchange, unit of account, and store of value to be effective. The USD's tie to oil sales and the threat of military force by the government gives it its uniqueness. Discuss on Discussion Service or Read Original Text.
AI Regex Tool Raises Concerns over Reliability & Verification
AI-powered regex tools like Regex.ai, ChatGPT, and Copilot are designed to aid software developers in writing code more accurately and quickly.
However, concerns have been raised about the potential for errors and the need for verification when using AI-generated code.
Some developers find it more difficult to verify the output of AI-generated regex than to write regex themselves.
Users have recommended tools like Debuggex.com, Compose-regexp.js, and grex for creating regular expressions.
Despite demand for AI-generated regex, there still exists the possibility of errors and the need for adversarial testing to verify results.
Regex.ai has faced criticism over its lack of thoroughness and reliability, as well as the possibility of inexperienced users pasting sensitive information into the generator's input box.
Despite these criticisms, Regex.ai has plans to roll out version 1.1 with improved performance and descriptions. Discuss on Discussion Service or Read Original Text.
Buying Cheaper Flight Tickets through Pos Discrimination & Travel Hacks
Dynamic pricing for flight tickets can lead to different prices based on multiple factors, but there are no predictable rules. Travel hacks include traveling with carry-on luggage, flying economy, booking with a credit card that provides travel insurance and rewards, and adjusting travel dates. Discussions on carbon emissions and flights touch on individual actions, regulations, innovations in battery technology, and the cost of synthetic fuels. The impact of having children on climate change is debated, with arguments for and against. Personal actions to reduce CO2 emissions may not lead to reduced jet fuel usage, and more drastic measures may be needed. Travelers on a budget can save by booking flights originating outside their home countries or using certain tactics such as adding a weekend stay. Airlines use price discrimination to offer different fares based on the Point of Sale (POS) or the country in which the ticket is purchased. Choosing the country for the POS when booking is important and travel agents may find cheaper deals by looking at sales in different countries. Discuss on Discussion Service or Read Original Text.
Chinese App Exploits Millions of Android Devices with Zero-Day Vulnerability
Chinese app exploits millions of Android devices with zero-day vulnerability. An Android app from China is alleged to have used a zero-day exploit on millions of devices, according to reports on Hacker News. Chinese apps frequently have behaviors, including hiding the app icon and installing apps without consent, that are like malware. Users are concerned about the lack of third-party app checks for Android while Android vs. Apple's freedom of choice is debated; there are criticisms of China's Great Firewall and arguments about the benefits of having an App Store. Pinduoduo, a popular shopping app in China has been identified as a risk to Androids due to the zero-day vulnerability it included, which allowed hackers to take control of millions of devices and install malicious apps. The vulnerability has been fixed and the app has been removed from the global Google Play store Discuss on Discussion Service or Read Original Text.
Automate Repetitive Tasks on Browser with Taxyai's GPT-4 Extension
TaxyAI is an open-source browser extension that automates tasks in a browser using GPT-4. Users input a task, and Taxy pulls the DOM and sends the remaining information alongside user instructions to GPT-4 to perform the appropriate action. Developers say Taxy can automate web-based workflows and learn from previous user interactions to adapt workflows. The extension extracts structured data from web pages, and uses LLM to suggest and enact custom workflows for that data. Taxy currently supports ad-hoc instructions, but future updates will include saved and scheduled workflows. Taxy simplifies HTML to include only interactive or semantically important elements, assigns an ID to each interactive element, and uses methods click(id) and setValue(id, text) to interact with webpages. Taxy executes actions using chrome.debugger API and updates action history before repeating the cycle. Taxy is open source and has a waitlist before it's available on the Chrome Web Store. Discuss on Discussion Service or Read Original Text.
Debating the Usefulness of Push Notifications in Browsers
Push notifications are now available on browsers but have mixed opinions on their usefulness and intrusiveness. Users criticize longer startup times, the reliability of notifications, and the presence of browser extensions. Browser vendors hope push notifications will improve engagement, but users have concerns about the volume and clutter. Mixed reactions to push notifications with some finding them useful for staying updated, while others see them as overbearing and intrusive. Some users disabled notifications altogether, while others see potential in technical applications and chat apps. Push notifications could have useful applications if better segmentation and filtering were implemented. Push notifications were standardized in 2016 and supported by major browsers, including Safari for iOS and iPadOS for Home Screen Web Apps. Discuss on Discussion Service or Read Original Text.
Windows 11 Adds Invasive Start Menu Ads, Frustrates Users
Latest Windows 11 update adds invasive full-screen ads to the Start menu. Users complain about lack of respect for their time and invasive privacy-settings. Microsoft criticized for customer-hostile ads that drive users away. Some users are switching to Linux or Mac due to frustration with Windows. Microsoft's focus on advertising leads to negative impact financially. Debate over whether it's reasonable to expect ads in an operating system. Windows 11 reportedly will no longer work on Intel machines launched earlier than 8th Gen. Some users have not experienced the ads, leading to speculation they may only be appearing for certain users. Optional non-security preview update for Windows 11 brings a new colour scheme and notifications for Microsoft accounts, but also marks the debut of Start menu promotions for Microsoft products. Discuss on Discussion Service or Read Original Text.
Language AI Model Outperforms Humans in Tasks
The language model, ChatGPT, outperforms human annotators and Mechanical Turks for text-annotation tasks, according to a recent paper. ChatGPT was found to be 20 times cheaper than human MTurkers in performing certain tasks, scoring 75% accuracy on a task where MTurkers scored around 20%. Stanford University researchers used OpenAI's GPT-3 model to train a sentiment analysis tool that outperformed human annotators on a set of standard benchmark tests and was significantly more efficient and scalable than human labor. The capabilities of AI are growing more rapidly than previously believed, with AI predicted to take on physical tasks in the near future. Safety concerns around AI have not been taken seriously, and control of toxic language seems to be a priority. An ensemble of GPT-style language models was used to classify short text and improve agreement while reducing the number of incorrect predictions. Language models have limitations in their ability to comprehend and interact with the world around them, and the need for continued research into improving these models has been highlighted. ChatGPT outperforms crowd-workers for annotation tasks such as relevance, stance, topics, and frames detection, and is around 20 times cheaper than using a platform like MTurk. Discuss on Discussion Service or Read Original Text.
Ctrl-Alt-Test Unveils Procedural Mesh Generator for Windows Intros
French Demoscene group Ctrl-Alt-Test releases procedural mesh generator for Windows intros. Generator allows for creation of various shapes without 3D modeling constraints. Group also uses traditional polygons for creating custom textures with smaller memory footprint. Technical constraints lead to innovation and new ideas for the group. Workshop on procedural mesh generation will be held at Revision 2023 in June. Procedural mesh generation can be simplified by combining basic elements creatively. Mesh generation can be improved with signed-distance fields and marching cube algorithms. Low poly models can be refined with subdivision, lighting, and cinematographic techniques. Mesh generation can offer quick iteration on designs, implemented through C++ and JSON formats. Balancing modeling work and expressiveness allows for wide range of possibilities in 64kB intros. Discuss on Discussion Service or Read Original Text.
Alibaba to Split into Six Independent Companies for Governance
Alibaba to split into six groups, each focusing on a different sector, for better corporate governance and transparency; e-commerce, fintech and logistics operations will be separated and operate independently. The restructuring comes amid increased regulatory scrutiny and a recent antitrust investigation. Company will settle antitrust investigation by paying $2.8 billion and divesting media assets. New groups include Cloud, Chinese e-commerce, Global e-commerce, Digital mapping and food delivery, Logistics, and Media and entertainment. Discussions on Hacker News revolve around China's crackdown on tech giants and the possibility of similar actions taken against American tech companies. Speculation that Alibaba's restructuring is driven by fear of regulatory crackdowns Discuss on Discussion Service or Read Original Text.
Stateless Programming for Simulations & Animations in Games
Game art for background animations avoids state and instead uses time-based noise functions. Delta-t is preferred over stateful operations for frame rate independent animations. Stateless programming minimizes variable use and relies on current time as a parameter for functions. Hybrid approach of minimizing state but using it where it makes sense is suggested. Closed-form solutions can eliminate stored state and create more deterministic and testable functions. Eliminating state can simplify code and make it more efficient and independent of frame rate. State is necessary in certain cases, such as user interfaces. Spending time at the whiteboard and considering alternatives to state can lead to simpler and better code. Discuss on Discussion Service or Read Original Text.
Emulate Mac Os in Browser with Infinite Mac
Infinite Mac is a web-based emulator that can run almost every version of Mac OS from 1984's System 1.0 to 2000's Mac OS 9.0.4. The project is hosted on Infinitemac.org and is gaining popularity on social media sites like Hacker News. The community built around the project shares memories of early computing and the classic Mac OS desktop metaphor. The project aims to provide a curated environment for users to experience early versions of the Mac OS. The website features 36 bootable images, with options to choose which hardware to run the OS on, a permalink for each release, and the ability to open new windows. The author is accepting donations to cover the infrastructure costs of the project and plans to add more obscure pre-release OS versions and enhance software persistence support. Discuss on Discussion Service or Read Original Text.
Red Hat Celebrates 30 Years of Open-Source Contributions
Red Hat celebrated its 30th anniversary, with many praising the company's contributions to open-source technology such as Red Hat Enterprise Linux, OpenStack, and Kubernetes. Some expressed criticisms regarding systemd, pulseaudio, and freedesktop standards. Discussions on Hacker News discussed the benefits and drawbacks of using systemd, centering around choice and flexibility in service management within the Linux ecosystem. Commenters praised Red Hat for its Linux distribution and certifications but had concerns regarding IBM's acquisition and possible changes to its direction and company culture. Red Hat employees were divided in their opinions regarding IBM's acquisition of the company, with some noting increased oversight and interference. Red Hat's contributions to the FOSS world have been significant, pioneering FOSS as a business model, setting standards in the industry, and embracing the contributions of its employees. The article discussed the evolution of the network edge, with edge computing becoming more prevalent due to the growth of IoT and the need for faster processing times and better security. Discuss on Discussion Service or Read Original Text.
Openflamingo: Open Framework for Multimodal Llm Training
OpenFlamingo, an open-source framework for training multimodal LLMs has been released. The Python based framework is developed to enable training and evaluation of Flamingo-style LMMs with in-context few-shot learning capabilities. OpenFlamingo currently supports visual question-answering, captioning, and image classification tasks. The framework is built over frozen LLaMA and CLIP models, thereby inheriting their potential harms. The framework was developed by the LAION team and is released under an open-source license Discuss on Discussion Service or Read Original Text.
Learning Resources for Llms & Gpts
Hacker News post shares learning materials for LLMs and GPTs. Various resources include YouTube lessons, articles, and research paper lists. YouTube videos cover multi-head attention, masked attention, and transformer architecture. Additional resources include "The Annotated Transformer" and "PyTorch Language Modeling with nn.Transformer and TorchText". Research paper lists include "Improving Language Understanding by Generative Pre-Training" and "Scaling Laws for Neural Language Models". Some comments debate reliability of LLMs, but post remains a great resource for learners. GitHub footer includes information about terms, privacy, security, pricing, blog, and contact. Footer asks users to refresh session by signing out and signing in again. Discuss on Discussion Service or Read Original Text.
Tech's Unsustainable Upgrade Cycle & Obsolete Devices
Tech industry's unsustainable upgrade cycle creates e-waste and harms the environment. App updates and new features push users to upgrade, but developers have little incentive to support old devices. Some users suggest open-source alternatives or downgrading, but these options are not always feasible or supported. Planned obsolescence and restrictive policies from companies like Apple contribute to the problem. Users and developers call for greater control over devices and software, as well as longer-lasting products and legislations to prevent forced upgrades. High cost and environmental impact of device upgrades are increasing concerns for users and the industry as a whole. Discuss on Discussion Service or Read Original Text.
Apple Launches "Buy Now, Pay Later" Service in Us
Apple has launched a new service called "Apple Pay Later" in the US, which offers interest-free payments over several months for purchases made on credit. Critics raised concerns about the potential suspension of iCloud accounts should payments not be made. The service offers financing options for both Apple Pay users and Apple Card holders, although it may not be the best option for those who want to earn cashback on all purchases. Goldman Sachs reportedly faced losses of $1.2bn for launching the Apple Card. Commentators have suggested that the move could pose a threat to alternative financing providers such as Klarna and Afterpay Discuss on Discussion Service or Read Original Text.