The author successfully ran 240 instances of a JavaScript Pong game simultaneously in separate browser tabs, pushing the limits of browser performance. They achieved this by meticulously optimizing the game code for minimal CPU and memory usage, employing techniques like simplifying graphics, reducing frame rate, and minimizing DOM manipulations. Despite these optimizations, the combined processing load still strained the browser and system resources, causing noticeable lag and performance degradation. The experiment showcased the surprising capacity of modern browsers while also highlighting their limitations when handling numerous computationally intensive tasks concurrently.
A developer attempted to reduce the size of all npm packages by 5% by replacing all spaces with tabs in package.json files. This seemingly minor change exploited a quirk in how npm calculates package sizes, which only considers the size of tarballs and not the expanded code. The attempt failed because while the tarball size technically decreased, popular registries like npm, pnpm, and yarn unpack packages before installing them. Consequently, the space savings vanished after decompression, making the effort ultimately futile and highlighting the disconnect between reported package size and actual disk space usage. The experiment revealed that reported size improvements don't necessarily translate to real-world benefits and underscored the complexities of dependency management in the JavaScript ecosystem.
HN commenters largely praised the author's effort and ingenuity despite the ultimate failure. Several pointed out the inherent difficulties in achieving universal optimization across the vast and diverse npm ecosystem, citing varying build processes, developer priorities, and the potential for unintended consequences. Some questioned the 5% target as arbitrary and possibly insignificant in practice. Others suggested alternative approaches, like focusing on specific package types or dependencies, improving tree-shaking capabilities, or addressing the underlying issue of JavaScript's verbosity. A few comments also delved into technical details, discussing specific compression algorithms and their limitations. The author's transparency and willingness to share his learnings were widely appreciated.
The video demonstrates a functioning bicycle built with omni-directional ball wheels instead of traditional wheels. The creator showcases the build process, highlighting the custom-made frame and the challenges of incorporating the spherical wheels. The bike's unique mechanics allow for sideways and diagonal movement, though it requires considerable effort and balance to maneuver, resulting in a slow and somewhat wobbly ride. Despite the unconventional design, the creator successfully demonstrates the bike's ability to move in various directions, proving the concept's feasibility.
Commenters on Hacker News largely praised the engineering and ingenuity of the omni-directional bike. Several expressed fascination with the complex mechanics and control systems required to make it work. Some discussed the potential applications of such a drive system, suggesting uses in robotics or other vehicles. A few questioned the practicality of the design for everyday use, citing potential issues with efficiency, terrain handling, and the learning curve required to ride it. There was also some discussion about the similarities and differences between this design and other omni-directional vehicle concepts. One commenter even offered a mathematical analysis of the kinematics involved.
The article details the complex and delicate process of transporting the massive KATRIN experiment, designed to measure the mass of the neutrino, from various construction sites across Germany to its final destination at the Karlsruhe Institute of Technology. This involved meticulous planning and execution, including disassembling components, transporting them via barge and truck, and then reassembling the entire apparatus with incredible precision. The journey, spanning months and hundreds of kilometers, faced numerous logistical challenges, such as navigating narrow roads and rivers, and required constant monitoring to ensure the sensitive equipment remained undamaged. The successful completion of this logistical feat marked a major milestone in the quest to understand the fundamental properties of neutrinos.
HN commenters discuss the challenges and complexities of the KATRIN experiment, highlighting the incredible precision required to measure neutrino mass. Some express awe at the engineering feat, particularly the vacuum system and the size of the spectrometer. Others delve into the scientific implications of determining the neutrino mass, linking it to cosmological models and the nature of dark matter. There's skepticism about the feasibility of ever directly detecting a neutrino, given their weakly interacting nature, but also optimism about the potential for KATRIN and future experiments to refine our understanding of fundamental physics. Several commenters lament the lack of mainstream media coverage for such a significant scientific endeavor. A few offer technical insights into the experiment's design and the difficulties in eliminating background noise.
Summary of Comments ( 24 )
https://news.ycombinator.com/item?id=43119086
Hacker News users generally expressed amusement and mild interest in the project of running Pong across multiple browser tabs. Some questioned the practicality and efficiency, particularly regarding resource usage. One commenter pointed out potential improvements by using Web Workers or SharedArrayBuffers for better performance and inter-tab communication, avoiding the limitations of localStorage. Others suggested alternative, more efficient methods for achieving the same visual effect, such as using a single canvas element and drawing the game state across it. A few appreciated the whimsical nature of the project, acknowledging its value as a fun experiment despite its lack of practical application.
The Hacker News post "Running Pong in 240 browser tabs" generated a moderate amount of discussion, with a number of commenters expressing their fascination and amusement with the project.
Several commenters focused on the technical aspects. Some questioned the efficiency of using browser tabs for this purpose, pointing out the resource intensiveness of such a setup. Discussions arose around alternative approaches that might offer better performance, such as using Web Workers or a more streamlined communication method between the tabs. One commenter specifically suggested using SharedArrayBuffer for faster inter-tab communication, eliminating the need for the message passing overhead. The limitations of the current implementation were also discussed, including the difficulty in debugging and the performance bottleneck it presented.
Other comments centered on the inherent quirkiness and fun of the project. Some appreciated the creativity and ingenuity involved in using browser tabs in such an unconventional manner. The nostalgic element of Pong also resonated with several users.
A few commenters highlighted the potential educational value of the project. They suggested it could serve as an interesting demonstration of how browsers work and how they can be manipulated for unusual applications.
The impracticality of the approach was also a recurring theme. Many commenters acknowledged the impracticality of the approach for any serious application, but appreciated the project as a fun experiment.
Finally, there was some discussion about the security implications of such a setup. The idea of running untrusted code across multiple tabs raised concerns about potential vulnerabilities.
While no single comment stands out as exceptionally compelling, the collective discussion offers a variety of perspectives on the technical, practical, and even philosophical aspects of the project, reflecting the diverse interests of the Hacker News community.