The hottest Substack posts right now

according to Hacker News
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Extending Object Definitions With OpenAPI's allOf

The API Changelog • 3 implied HN points • 25 Jul 25
🕹 Technology Software Development Programming APIs
  1. OpenAPI allows you to define object inheritance using a feature called 'allOf'. This makes your API structure cleaner and easier to manage.
  2. Using 'allOf' helps reduce duplication by allowing you to create a base object that various other objects can extend. This means you only need to define shared fields once.
  3. By organizing your OpenAPI documents with 'allOf', you can make changes more safely. Updating shared fields in one place avoids mistakes and keeps everything consistent.

E6 - 🏰 Building a Moat for Your AI Startup 🏰

The Product Channel By Sid Saladi • 10 implied HN points • 15 Dec 24
💼 Business Startups Entrepreneurship AI Strategy Product Management Competitive Analysis
  1. Building a competitive 'moat' is crucial for AI startups to protect themselves from competitors. It means having unique advantages that others can't easily copy.
  2. Startups should focus on specific industries or problems to create tailored solutions. This helps them collect valuable data and improve their models over time.
  3. Using proprietary data and building complex systems can strengthen a startup's position. It’s about going beyond just using popular AI tools and making something unique.

Quant Letter: June 2025, Week-2

The Parlour • 4 implied HN points • 11 Jun 25
💰 Finance Quantitative Investment Market Analysis Financial Technology Risk management
  1. A new approach in finance is being developed to deal with model uncertainty, allowing better decision-making with limited data.
  2. Using deep learning and neural networks can help improve the accuracy of options pricing, especially during crucial events like earnings announcements.
  3. Current trends show that integrating climate considerations into investment strategies can be done without losing much performance.

GitTrends - June 2 2024

GitTrends • 1 HN point • 02 Jun 24
🕹 Technology Cybersecurity Cloud Computing Programming AI Open Source
  1. Highly popular GitHub projects include ChatTTS, SickoMenu, and YOLOv10 showcasing innovation in speech, gaming, and object detection technologies.
  2. Significant week-to-week growth was observed in projects related to software architecture, AI applications in finance, and search engine libraries, indicating a surge in interest and development in these areas.
  3. Emerging trends include projects like MusicGPT, Rope, and LookOnceToHear, highlighting advancements in music generation, GUI interaction, and real-time speech extraction technologies, contributing to diverse GitHub contributions.

20250202

Curious futures (KGhosh) • 8 implied HN points • 02 Feb 25
🕹 Technology Futures Media Politics Environment Design AI
  1. AI technology is becoming so advanced that it's hard to tell machines from real people. This change makes us think about how we interact with non-human agents like AI.
  2. Communities are blending tech and nature, like having tiny forests in cities and 3D-printed shoes, showing a new lifestyle that values both innovation and the environment.
  3. There are ongoing debates about freedom of speech and how much control companies should have over what we can say online. These discussions reflect our concerns about the future.
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Judgment Need Issue From Human Lips

Autonomy • 11 implied HN points • 15 Nov 24
🕹 Technology Justice Ethics Judgment Law AI
  1. AI can gather and sort important information for legal cases, but humans must still make the final decisions. Justice requires human judgment because it involves moral and ethical concerns.
  2. Many people can’t afford good legal help, and AI can help bridge that gap by making information more accessible. This means that AI can support lawyers by doing some of the heavy lifting in legal research and document review.
  3. Judicial accountability is crucial, meaning that there needs to be a real person behind decisions. This is because only humans can truly understand the moral weight of the judgments they are making.

Revisiting the Core-JS situation

On Engineering • 44 implied HN points • 22 Apr 23
🕹 Technology JavaScript Software Development Open Source Web Development
  1. Core-JS is a crucial JavaScript library with significant dependencies in the open-source community and popular software.
  2. The project faced financial difficulties due to the sole maintainer's plea for support and threats to its future.
  3. There are concerns about the security and continuity of Core-JS, emphasizing the need for community involvement, financial support, and alternative solutions.

Can Anyone Multi-Task?

Tribal Knowledge • 19 implied HN points • 18 Sep 22
💼 Business Leadership Workplace culture Startups Management Productivity
  1. Context switching is a focus killer, it interrupts deep work and takes time to get back into the right mindset.
  2. Multi-tasking is often just quick context switching between tasks, leading to partial effort on each. Focusing on one task at a time can improve efficiency.
  3. Transitioning between different levels of thinking - task, project, and owner level - is essential in startup environments, requiring adaptability and focus.

Having a Conversation With Yourself: 2024

Investing 101 • 9 implied HN points • 28 Dec 24
💼 Business Entrepreneurship Market Trends Business strategy Investing Venture Capital
  1. Storytelling is a powerful tool that shapes how we see reality. The stories we tell ourselves and others influence our beliefs and actions.
  2. It's important to think long-term in both investments and personal goals. Planning for decades can help you make better choices today.
  3. Ambition is a valuable trait and can coexist with care for family and personal well-being. It's essential to recognize that supporting your ambitions doesn’t take away from others' opportunities.

Why "bias for action" is not good enough

The Caring Techie Newsletter • 11 implied HN points • 12 Nov 24
🕹 Technology Leadership Software Engineering Project management Decision-making Risk management
  1. Having a 'bias for action' can be good, but it's not always the right approach. Sometimes, acting without enough thought can lead to bigger problems.
  2. In situations where you don't fully understand the problem, it might be better to wait and gather more information before jumping to conclusions.
  3. Instead of rushing into decisions, take a moment to think things through. Thoughtful action can help you make better choices.

29/8/2022: Real World Crypto Day tại Hà Nội

Thái | Hacker | Kỹ sư tin tặc • 19 implied HN points • 28 Aug 22
🔮 Crypto Cryptocurrency Privacy Encryption Cybersecurity Blockchain
  1. Real World Crypto Day in Hanoi on 29/8/2022 featured experts discussing important topics like lattice cryptography and security vulnerabilities in popular blockchains.
  2. The event covered a range of practical cryptography topics like key management, secure API design, and research on password storage and encryption techniques.
  3. Vietnam faces a shortage of security solution designers despite having skilled hackers, highlighting the importance of developing more comprehensive cybersecurity expertise.

My Cave of Echoes

DruGroup • 39 implied HN points • 14 Dec 21
📖 Philosophy Perspective Conviction Bias Communication Learning
  1. It's important to be friends with people who are different from you. Learning from their experiences can help expand your thinking.
  2. Listen more and ask questions when talking to others. Understanding their views can help you see where they are coming from.
  3. Try to consider other viewpoints even if you don't agree. It helps avoid misunderstanding and can make your own beliefs stronger.

ServiceTitan: Benchmarking the S1 Data

Clouded Judgement • 11 implied HN points • 18 Nov 24
💼 Business Technology Marketing Economics Sales Finance
  1. ServiceTitan is a platform designed for trades industries, like plumbing and HVAC. It helps businesses manage things like scheduling, customer service, and payments.
  2. The company has a big market opportunity, aiming to capture a larger share of the $1.5 trillion spent on trades services annually in the U.S. and Canada.
  3. ServiceTitan has shown strong revenue growth at 26% over the last year and has a focus on improving its financial metrics, including gross and operating margins.

Reducing selection bias / popularity bias in ranking

Recommender systems • 26 implied HN points • 20 Jan 24
🕹 Technology Algorithms Coding Machine Learning Data Analysis AI
  1. Reducing selection bias and popularity bias in ranking is important for recommender systems.
  2. An advocated approach is to factorize user interaction signals to account for biases originating from power users and power items.
  3. The proposals for causal/debiased ranking involve factorization, mutual information, and mixture of logits to improve the ranking model.

The Week in Repair: April 10-16

Fight to Repair • 19 implied HN points • 19 Apr 22
🕹 Technology Tech Companies Hardware Repair
  1. Apple's shift to subscription hardware could impact right to repair laws, changing technology accessibility and future hardware ownership.
  2. India aims to become the repair capital of the world, utilizing its engineering talent to extend product life and promote sustainability.
  3. Big tech companies like Samsung, Google, and Apple are making strides in allowing consumers and repair shops to access official parts for easier device repairs, supporting the right to repair movement.

The Best Startup Books You've Never Heard Of

Greg’s Substack • 2 HN points • 01 Apr 24
💼 Business Startups Advice Podcasts Entrepreneurship Books
  1. Reading anecdotes and advice from successful entrepreneurs in the startup world helps you understand and learn from their experiences.
  2. There are lesser-known startup books that provide fantastic advice and are engaging reads for anyone interested in building or working in startups.
  3. Key insights from startup books include the importance of testing ideas quickly, the value of working with a good team, and the caution founders should have when celebrating raising money.

The Haves and the Havents: Interlude

Carefree Sketches • 19 implied HN points • 22 Jul 22
📖 Philosophy Human nature Understanding Valuation Love
  1. When we say 'I like you' to someone, it involves a certain conceit and value judgment based on rational parameters.
  2. Liking someone involves weighing various values such as amenity, rank, purpose, and affinity, and assigning them a value.
  3. Contrasting 'I like you' with 'I love you,' love is seen as irrational, residing in the heart, while liking is a more reasoned and intellectual process.

The Holy Fool

Unverified Revelations • 42 implied HN points • 08 May 23
📖 Philosophy Ethics Morality Archetypes Principles Activism
  1. The holy fool is a political archetype who confronts society's moral values without concern for status or effectiveness.
  2. Holy fools are powerful because they challenge the status quo and are willing to pay external costs for internal coherence.
  3. There are false fools who mimic the holy fool's outward appearance but lack the genuine commitment and self-consistency.

Microsoft Fabric Mirroring: Revolutionising Data Access and Real-Time Insights

Data Plumbers • 2 HN points • 01 Apr 24
🕹 Technology Data Warehousing Data Analytics Database Management Data Integration
  1. Microsoft Fabric Mirroring is a transformative technology that revolutionizes data access and real-time insights in organizations.
  2. Mirroring enables universal access to various databases, real-time data replication, and granular control over data ingestion into Microsoft Fabric's Data Warehousing experience.
  3. With Mirroring, organizations can achieve zero-ETL insights, leverage the innovative capabilities of Fabric's OneLake repository, and bridge the gap between data and action for swift adaptation and success.

System Design Mock Interview- Design Instagram #1 [Systems Design Sundays]

Technology Made Simple • 19 implied HN points • 30 May 22
🕹 Technology Social media Online Learning Interview Prep
  1. Mock interviews are valuable for interview preparation and can help in improving performance.
  2. Watching experts and observing their approach to defining problems can be beneficial for learning.
  3. When designing systems, it's crucial to consider monetization strategies and not overlook the economic aspects.

2024 Q1 Katana Liquidity Mining Program Update

Ronin’s Newsletter • 24 implied HN points • 15 Feb 24
🔮 Crypto
  1. Binance listing RON has increased accessibility and trading depth for the token
  2. The Katana Liquidity Mining Program rewards are being adjusted to reduce inflationary rewards to liquidity providers
  3. The phased reduction of rewards aims to create better token price equilibrium and allocate more rewards for user growth campaigns

Who needs prompt engineers anyway?

Let's talk games & AI. • 12 implied HN points • 22 Oct 24
🕹 Technology Automation AI Machine Learning Software Development
  1. AI can now write its own prompts, saving time and money compared to humans doing it. This is especially helpful for tasks with clear inputs and outputs.
  2. Building a system that helps AI generate and test prompts can greatly improve efficiency and reduce complexity in automation tasks. It also lowers costs for the same quality output.
  3. Humans still play an important role by providing initial data and guidance but the bulk of the work is shifting to AI. This means we need to create good systems that let AI handle most tasks.

A Letter to Devs: What to Expect from Product Managers

Odai’s Substack • 3 HN points • 12 Feb 24
🕹 Technology Collaboration Software Development Product Management User Feedback Innovation
  1. Product Managers need to excel in figuring out the next most valuable thing to build and bring clarity to the dev team.
  2. Product Management involves a structured 'discovery' process with stages like framing, observation, synthesis, strategy, and prototyping.
  3. Product Managers should show the value proposition of what is being built, provide clear direction during development, and measure outcomes to ensure usefulness.

A New Atlantis

Model Thinking • 2 HN points • 01 Apr 24
💼 Business Infrastructure Construction Housing Development Economics
  1. Housing in Britain is currently unaffordable due to bloated planning restrictions, costing residents in terms of space, age of homes, and financial burden.
  2. The proposal to reclaim land from Dogger Bank for housing development comes with an estimated cost of £97.5bn, with potential present value benefits of £622bn, showing a promising cost-benefit ratio.
  3. The development of a new city on Dogger Bank has the potential to significantly impact economic activity, urban infrastructure, land prices, and GDP gains, making it a complex but potentially beneficial endeavor.

Data Science Weekly - Issue 469

Data Science Weekly Newsletter • 19 implied HN points • 17 Nov 22
🕹 Technology Software Engineering Robotics Data science AI Machine Learning
  1. Learning machine learning can be accomplished without an engineering background. It often requires hard work, perseverance, and adopting good software engineering practices.
  2. Robotics and AI are being increasingly used in fulfillment processes at companies like Amazon. These technologies face challenges but also provide innovative solutions for package handling.
  3. Large language models are evolving to act like agents that make decisions. This shift towards action-driven models may make them resemble artificial general intelligence (AGI) more closely.

X replaces @ with 𝕏

The Techno Sapiens • 2 HN points • 01 Apr 24
🕹 Technology Branding Social media
  1. X is replacing @ with 𝕏 in an effort to solidify its new branding, starting to roll out the feature to select users over the next few days.
  2. The announcement was made by X, formerly known as Twitter, via a blog post from its CEO, Elon Musk.
  3. Typing 𝕏 might be challenging on regular keyboards, but solutions like text replacement shortcuts for mobile users or keyboard shortcuts for Mac users exist.

Do Large Language Models have a "Reasoning Gap"?

The Irregular Voice • 2 HN points • 01 Apr 24
🕹 Technology Machine Learning AI Data Experiments Mathematics
  1. Large Language Models (LLMs) may not always exhibit true reasoning abilities, with a potential reliance on memorization instead of learning general techniques.
  2. Synthetic data generation systems like MATH() can be used to explore the reasoning capabilities of LLMs, but may introduce biases if not carefully analyzed and corrected for errors.
  3. Fine-tuning LLMs on specific problem areas can reveal insights into their reasoning abilities, but challenges with longer solutions and complex problem sets may impact performance.

🌸 Newsletter #30: A new HTTP status, manage difficult colleagues, finally understand the DNS...

Women On Rails Newsletter - International Version • 19 implied HN points • 26 Apr 22
🕹 Technology Tutorials Programming Web Development Tech news Career development
  1. The newsletter covers a new HTTP status code and updates on frameworks like Astro and Redwood.
  2. Tips on building relationships with difficult colleagues, recruiting juniors effectively, and balancing coding as a manager.
  3. Exploring resources for better coding practices like semantic HTML and a DNS playground.

India On The Heels Of USA In Defense And Space Manufacturing - Could It Outpace By 2030?

Golden Pineapple • 31 implied HN points • 25 Oct 23
💼 Business Space Manufacturing Funding Rounds Defense
  1. India is making significant strides in defense and space manufacturing, with 10% of growing companies in the industry based there.
  2. The top 10 fastest growing companies in defense and space manufacturing include notable names like Mach Industries, Pixxel, and Vannevar Labs.
  3. About 70% of the 117 growing defense and space manufacturing companies prioritize the engineering department, showing a strong focus on technology and innovation.

Hayek Helps Us Understand Why People Are Losing Their Minds

QTR’s Fringe Finance • 34 implied HN points • 06 Sep 23
📖 Philosophy Moral Philosophy Political Philosophy Social Philosophy Ethics
  1. F.A. Hayek's 'The Fatal Conceit' helps us understand how reason is not the cause but a product of civilization.
  2. Reason does not exist separately from our social environment, impacting our ability to resist tyranny.
  3. Humanity's evolution and civilization were shaped by following rules and morality, not by mere intellect or socialist ideals.

There is no secure software supply-chain

On Engineering • 44 implied HN points • 12 Apr 23
🕹 Technology Open Source Cybersecurity Security
  1. The security of open source software is under threat due to a lack of reliable maintainers, leading to compromised secure software supply chains.
  2. Supply-chain attacks, like the SolarWinds attack, can have massive impacts on government agencies and organizations by compromising dependencies in software.
  3. Incentivizing open source maintainers with money may not always be the best solution; allocating real engineering time and resources to contribute and support open source projects can help maintain software reliability and security.

Semantic Stream

davidj.substack • 23 implied HN points • 29 Feb 24
🕹 Technology Querying Data Storage
  1. Consider how to use a semantic layer with streaming data to enhance efficiency and data processing.
  2. Streaming data warehouses handle storage differently than batch data warehouses, keeping fresh data in-memory and reducing compute cost.
  3. The semantic layer abstracts entities, attributes, and metrics, aiding in managing and optimizing queries on streaming data.

New tools to use with new scroll

Vesuvius Challenge • 10 implied HN points • 27 Nov 24
🕹 Technology Innovation Machine Learning Data science Open Source Community projects
  1. The Vesuvius Challenge has introduced new tools to help with studying ancient scrolls. These tools are meant to improve our understanding of scrolls found in Herculaneum.
  2. There is a total of $18,500 available as prizes for community contributions. The rewards are aimed at motivating open-source work that supports the reading and analysis of the new scroll dataset.
  3. Several contributors have developed techniques and tools for better image segmentation and data analysis of scrolls. These advancements help make the process of interpreting ancient texts easier and more accurate.