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Ti-84 Evo from education.ti.com
167 by thatxliner 2h ago | | |

Article: 18 min

The article introduces the TI-84 Evo graphing calculator, highlighting its new features such as a faster processor, larger graphing area, USB-C port, simplified keypad, smarter menus, built-in help, and enhanced math tools. It also mentions the availability of accessories, support options, and color choices for customization.

The TI-84 Evo graphing calculator offers a significant upgrade in functionality and user experience, potentially enhancing educational outcomes for students and professionals in mathematics and science fields.

Simplified keypad and smarter menu system for easier navigation
Built-in help feature to guide users during use
Enhanced math tools including points of interest trace, redesigned lines and conics app, faster intersection calculations
Color customization options with various styles (white, pink, mint, raspberry, silver, teal, lavender)
Accessories for additional functionality and support

Discussion (182): 38 min

The comment thread discusses the TI-84 Evo calculator, its features such as Python support, price, and performance compared to older models. There is a consensus that calculators have become less necessary with smartphones and computers, but nostalgia for classic models like the TI-85 remains strong. The debate around the high price of TI calculators versus their functionality continues.

TI calculators are overpriced
Older models were sufficient

Education Technology (specifically educational technology), Calculators

New research suggests people can communicate and practice skills while dreaming from newyorker.com
172 by XzetaU8 5h ago | | |

Article: 20 min

The article discusses the history and recent scientific research on sleep learning, exploring its potential benefits and drawbacks.

Early studies on sleep learning were flawed.
Lucid dreamers can solve problems during sleep.
Targeted memory reactivation helps improve memory recall.
Sleep has its own universe, separate from waking life.

Discussion (96): 14 min

The comment thread discusses various aspects of sleep and its impact on learning, memory consolidation, problem-solving, and skill development. Opinions vary regarding the role of AI in assisting human learning during sleep, with some emphasizing the importance of traditional methods like walking outside for thinking and practicing skills.

Sleep is essential for learning, memory consolidation, and problem-solving
Lucid dreaming can improve skills and solve problems

Counterarguments:

Sleep acts as a compression for daily life, with dreams being a variant of day-life events
Walking outside and thinking is a better way to practice skills and solve problems

Education Learning & Memory

The Smelly Baby Problem from worksinprogress.news
29 by dionysou 2d ago | | |

Article: 24 min

The article discusses the history of disposable diapers, from their invention by Procter & Gamble to their widespread adoption. It highlights the challenges faced during the development process, such as creating a machine capable of producing hundreds of diapers per minute and addressing issues like heat rashes in babies.

Disposable diapers have become a necessity in modern parenting, but their environmental impact has sparked debates on sustainability and consumer choices.

Procter & Gamble's development and marketing of Pampers in the 1960s
Competitive landscape with brands like Huggies and Kimbies
Impact on environmental policies regarding disposable diapers

Quality:
The article provides a balanced view of the history and environmental impact of disposable diapers.

Discussion (11): 4 min

The comment thread discusses various aspects related to diapering and cloth diapers, including their environmental impact, personal experiences with using them, and humor about parenting tasks.

Environmental benefits of using cloth diapers

Industry News Manufacturing, Consumer Goods, Sustainability

Show HN: Destiny – Claude Code's fortune Teller skill from github.com/xodn348
38 by xodn348 3h ago | | |

Article: 7 min

Destiny is a fortune-telling skill for Claude Code that uses classical East Asian metaphysics to provide personalized daily and life readings. It computes deterministically from the user's birth date, time, city, and gender, using four pillars (eight-character birth chart), perpetual lunar calendar, and I-Ching hexagrams.

Perpetual lunar calendar conversion
I-Ching hexagram divination

Quality:
The article provides clear, technical information without sensationalizing the content.

Discussion (33): 3 min

The comment thread discusses a plugin for Claude Code that provides fortune readings based on East Asian astrology. There are discussions about installation, feature requests, accuracy of predictions, legal considerations, and personal experiences with LLM-induced psychosis.

feature request for compatibility with partner's profile

Counterarguments:

Have you A/B tested them?
Looks like a supply chain risk to me.

AI Artificial Intelligence, Machine Learning

Whimsical Animations Course Open House from courses.joshwcomeau.com
45 by SpyCoder77 3h ago | |

Article: 2 min

An open house for a whimsical animations course is being held to showcase selected lessons and teaching style.

Public lessons from the course for prospective students to evaluate teaching style and content.
Features available only to registered students, such as light mode, persisted video settings, saved edits, notes, and bookmarks.

Quality:
The article is straightforward and informative, providing clear information about the open house event.

Discussion (7):

The comment thread discusses the positive reception of Josh's new course on Whimsical Animations, highlighting its high-quality content and value for money compared to traditional education. Participants share their experiences with previous courses by Josh, praising his teaching style and the improvement in skills they've achieved.

Josh's courses are of high quality
Courses are expensive but worth it

Education Online Learning, Video Tutorials

Credit cards are vulnerable to brute force kind attacks from metin.nextc.org
154 by kodbraker 2h ago | | |

Article: 16 min

The article discusses the vulnerabilities in credit card security, specifically focusing on how attackers can exploit the information displayed during transactions and receipts to perform brute force attacks on PAN numbers.

, as it raises awareness about the vulnerabilities in credit card security and the need for better practices to protect consumer data.

The article highlights the limitations of PCI DSS standards, which only mask parts of credit card numbers.
The author shares their personal experience with a security breach and discusses the vulnerabilities in the system.

Quality:
The article provides factual information and personal experiences without expressing a strong opinion.

Discussion (121): 35 min

The comment thread discusses various aspects of online payment security, focusing on the differences between credit card and debit card fraud protection, the age and potential compromises in the credit card system, and the role of digital wallets. The community generally agrees that having a separate card for online payments can mitigate risks, while there is debate around the effectiveness of current fraud prevention measures and the impact of digital wallet functionality on security.

credit card fraud protection is better than debit card fraud protection in the US

Counterarguments:

debit cards have no fraud protection
digital wallets update credit card details after a new card is issued

Security Cybersecurity

Whohas – Command-line utility for cross-distro, cross-repository package search from github.com/whohas
111 by peter_d_sherman 8h ago | | |

Article: 34 min

whohas is a command-line utility that enables users and maintainers to search for packages across various distributions, including Arch, Debian, Fedora, Gentoo, Mageia, Mandriva, openSUSE, Slackware, Source Mage, Ubuntu, FreeBSD, NetBSD, OpenBSD, Fink, MacPorts, and Cygwin. It provides URLs for more details about the package and allows users to refine searches using grep commands.

whohas can facilitate knowledge sharing among developers across different distributions, potentially leading to improved package management practices and collaboration within the open-source community.

cross-distro and cross-repository package search capability
written in Perl
helps package maintainers find definitions from other distributions
can be used by normal users to discover available packages on different distributions

Quality:
The article provides clear instructions and examples, making it easy to understand the utility's capabilities.

Discussion (26): 3 min

The comment thread discusses an outdated Perl-based package search tool, its potential modernization, and related Linux package management concepts like SBOM handling and AI agents.

The tool uses Perl
The last release was 11 years ago

Counterarguments:

It could be updated with modern technologies

Software Development Command-line utilities, Package management

SpaceX rocket set for unintentional Moon landing – well, a piece of it anyway from theregister.com
28 by beardyw 11h ago | | |

Article: 7 min

Astronomer Bill Gray predicts that a leftover piece of SpaceX's Falcon 9 rocket, specifically the upper stage used for launching Blue Ghost and Hakuto-R lunar landers in January 2025, will unintentionally impact the Moon on August 5th. The object is currently orbiting Earth at an eccentric orbit with perigee around 220,000 km and apogee around 510,000 km. It intersects the Moon's orbit, leading to a close encounter that will result in the object hitting the lunar surface at high speed.

High concern for space debris management

Bill Gray's prediction
Falcon 9 rocket launch in January 2025

Quality:
The article provides factual information and predictions based on astronomical calculations, with no apparent bias or sensationalism.

Discussion (13):

The comment thread discusses various aspects of space exploration, including achievements by Blue Origin and SpaceX, the speed of sound in space, and units for measuring velocity. There is a debate between supporters of both companies regarding who has achieved more in Mars exploration. The conversation also touches on the appropriateness of using the speed of sound as a unit to measure spacecraft velocities.

Falcon Heavy launched a spacecraft that used a Mars gravity assist in 2023

Counterarguments:

several times the speed of sound is just meant to mean 'really fast' to earthlings

Space Aerospace, Space Exploration

City Learns Flock Accessed Cameras in Children's Gymnastics Room as a Sales Demo from 404media.co
238 by joshcsimmons 4h ago | | |

Article: 11 min

An article discusses the controversy surrounding Flock, a surveillance company that accessed cameras in sensitive locations like children's gymnastics rooms and playgrounds for sales demonstrations. The city of Dunwoody renewed its contract with Flock despite concerns raised by residents.

, as it raises concerns about privacy and surveillance technology in sensitive areas.

Residents are concerned about privacy and potential misuse of data.

Quality:
The article presents factual information and quotes from both sides of the controversy.

Discussion (67): 10 min

The comment thread discusses concerns over the use of security cameras in public places, specifically focusing on Flock's business practices and privacy issues related to camera footage being resold or accessed by third parties without consent. The conversation also touches upon managed services companies' risks regarding data access and privacy.

Counterarguments:

Cameras don't prevent crime but may provide opportunities to prosecute
Cameras are cheap and useful in many businesses
Flock's partnership with Amazon

News Privacy & Surveillance, Technology & Society

Lib0xc: A set of C standard library-adjacent APIs for safer systems programming from github.com/microsoft
35 by wooster 3h ago | | |

Article: 14 min

lib0xc is a set of C standard library-adjacent APIs designed to enhance safety in systems programming by making it easier for developers to adopt safer coding practices, embrace static bounds checking, and support clang's bounds safety extensions. It includes modules for standard library extensions (alloc.h, call.h, context.h, etc.) and systems programming utilities (buff.h, log.h, hash.h, etc.), providing familiar APIs that are drop-in replacements for existing functions while adding safety features.

lib0xc has the potential to significantly improve safety in systems programming by providing safer alternatives for common C language functions, which could lead to fewer bugs and vulnerabilities in software.

Codifies common patterns with well-documented and tested APIs.

Discussion (14): 3 min

The comment thread discusses the need for safer APIs in C/C++ standard libraries, with opinions on cargo-culting patterns, the role of standards committees, and a comparison between C and C++. The thread also mentions an existing library (lib0xc) that aims to provide safer C programming practices through various APIs.

Standard libraries should include safer APIs
There is a need for better documentation, testing, and support for safer C programming practices

Counterarguments:

There are real engineering concerns and reasons why this wasn't done by standards committees in the past
The C++ committee is led by Bjarne, who might not prioritize safety as much as the C committee does now.

Software Development Programming Languages & Tools, Libraries & Frameworks