The hottest Substack posts right now

according to Hacker News
Category

🚗 Uber One: Information Hierarchy

First 1000 • 805 implied HN points • 07 Sep 23
💼 Business Product Design
  1. Uber recently tested two designs for their subscription page, and design A performed better than design B.
  2. Information hierarchy is crucial on a page; our eyes move from the most important information to lesser details when making decisions.
  3. Design differences in information hierarchy can impact user engagement and decision-making.

What Gen Z really want from work

Make Work Better • 92 implied HN points • 26 Nov 25
💼 Business Work Culture Employee Wellbeing Job Market Workplace Trends Gen Z
  1. Gen Z wants safety in their work lives, including financial and emotional security. They've faced a lot of challenges, so feeling secure is really important to them.
  2. They value being heard and often ask questions instead of just following orders. This is sometimes seen as disrespect, but they just want to understand.
  3. Gen Z's political views are mixed; some lean more conservative while others are still very progressive. Understanding their different perspectives is crucial for connecting with them.

Import AI 360: Guessing emotions; drone targeting dataset; frameworks for AI alignment

Import AI • 379 implied HN points • 12 Feb 24
🕹 Technology AI Ethics Language Models Security Datasets
  1. Teaching AI to understand complex human emotions like joy, surprise, and anger can help in applications like surveillance and advertising.
  2. AI systems, like other software, are vulnerable to attacks, as shown by a demonstration breaking MoE models with a buffer overflow attack.
  3. Frameworks are being developed to ensure AI systems align with diverse human values, considering various perspectives and how to measure alignment.
  4. The development of AI systems is advancing in areas like emotion recognition, system security, and value alignment.
  5. Researchers are pushing the boundaries of AI capabilities, from emotion recognition to security to ethical alignment.
  6. Current AI trends indicate growth in researching human emotions, security vulnerabilities, and ethical considerations.
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The Difference Makers: Key Person(s) Value!

Musings on Markets • 579 implied HN points • 10 Dec 23
💼 Business Valuation Management Finance Entrepreneurship Investment
  1. Key people can significantly impact a business's value, whether it's a small practice like a doctor or a large company like Tesla. Even at bigger companies, certain individuals can make a big difference in how the business performs.
  2. Understanding who key people are in a company is crucial. These can include founders, top management, or even important employees at different levels who contribute unique skills.
  3. Companies can take steps to manage the risks that come with relying on key people, like using insurance or succession planning. These strategies can help ensure that the loss of an important individual does not as heavily affect the business.

Would Lenin have approved of the IMF?

Global Inequality and More 3.0 • 1328 implied HN points • 16 Nov 24
💰 Finance Financial Institutions Global Economy Monetary Systems Economic Policy International Finance
  1. The IMF has a specific role in ensuring countries maintain fiscal discipline and avoid excessive borrowing. This role is seen as necessary for economic stability, regardless of whether the system is capitalist or socialist.
  2. Critics often misunderstand the IMF's core mission, which is about discipline and accountability in fiscal matters. Austerity measures taken by the IMF are not inherently bad; they are meant to promote responsible economic behavior.
  3. If Lenin were alive today, he might actually support the IMF for its emphasis on fiscal responsibility and international trade management. He believed in the need for structured economic governance, similar to what the IMF provides.

Advanced sun reproduction

Metabolic Repair • 19 implied HN points • 26 Aug 24
🕹 Technology Home Automation Photography Lighting Electronics
  1. To make your indoor lighting like the sun, consider using bicolor lights that can change color temperature throughout the day. This can help your space feel more natural, but they can be more expensive and may not be as bright as daylight lights.
  2. Using an LCD HDR monitor can enhance your viewing experience, allowing for brighter images and better color matching with outdoor light. This can be especially useful if your current monitor seems washed out with your new lighting setup.
  3. If you want your lights to match outdoor brightness, consider measuring the light levels in your space with a lux meter. You may need to upgrade to higher wattage lights or adjust your room's surfaces to increase reflected light.

Import AI 361: GPT-4 hacking; theory of minds in LLMs; and scaling MoEs + RL

Import AI • 359 implied HN points • 19 Feb 24
🕹 Technology AI Research Multimodal models Cybersecurity Language Models
  1. Researchers have discovered how to scale up Reinforcement Learning (RL) using Mixture-of-Experts models, potentially allowing RL agents to learn more complex behaviors.
  2. Recent research shows that advanced language models like GPT-4 are capable of autonomous hacking, raising concerns about cybersecurity threats posed by AI.
  3. Adapting off-the-shelf AI models for different tasks, even with limited computational resources, is becoming easier, indicating a proliferation of AI capabilities for various applications.

Witnessing Creative Destruction

Points And Figures • 1039 implied HN points • 27 Jan 25
🕹 Technology Market Trends Competition Innovation AI Cybersecurity
  1. China released a new AI engine that outperforms existing models in the U.S., marking a significant step in AI innovation. This change shows how quickly tech landscapes can shift and the importance of staying competitive.
  2. To succeed in the current tech environment, startup founders should focus on wisely managing their funding and raising just enough money to reach their goals. It's important to avoid letting pride interfere with practical decision-making.
  3. The key to advancing AI and technology is competition, not regulation. Embracing competition can help improve products and services, keeping innovation alive and thriving.

Carta Destroys Trust and Enterprise Value

The Digital Leader Newsletter -- By John Rossman • 452 implied HN points • 18 Jan 24
💼 Business Leadership Technology Entrepreneurship Privacy Trust
  1. Carta's lack of clear expectations and behavior around protecting trust led to significant consequences.
  2. Trust in business is built on consistently making and fulfilling commitments.
  3. Defining what trust means in your business, setting expectations, and operationalizing commitments are key to maintaining trust.

Understanding Space Based Architecture for efficient Data Processing[System Design Sundays]

Technology Made Simple • 379 implied HN points • 12 Feb 24
🕹 Technology AI Data processing System Design Architecture Edge Computing
  1. Space-Based Architecture (SBA) distributes processing and storage across multiple servers, enhancing scalability and performance by leveraging in-memory data grids.
  2. The components of SBA include Processing Units (PU) for executing business logic, Virtualized Middleware for managing shared infrastructure, and data pumps for data marshaling.
  3. SBA offers benefits such as scalability, fault tolerance, and low-latency data access, but comes with challenges like complexity in design, debugging, and data security.

Notes on SubStack These Days

Brad DeLong's Grasping Reality • 338 implied HN points • 04 Aug 25
🕹 Technology Digital Platforms Content creation Community Building User engagement
  1. Substack thrives on community engagement. When users get involved by sharing feedback and suggestions, it keeps the platform vibrant and active.
  2. The success of Substack isn't just about technology; it's about the writers and readers who contribute their ideas and critiques. Their participation helps shape the platform's future.
  3. Balancing free and paid subscriptions is essential for growth. A healthy free audience can convert to paying subscribers, which is crucial for lasting success.

How to deal with non-i.i.d data in machine learning

Mindful Modeler • 479 implied HN points • 09 Jan 24
🕹 Technology Data interpretation Model Evaluation Machine Learning Data Modeling
  1. Dealing with non-i.i.d data in machine learning can prevent data leakage, overfitting, and overly optimistic performance evaluation.
  2. For modeling data with dependencies, classical statistical approaches like mixed effect models can be used to correctly estimate coefficients.
  3. In non-i.i.d. data situations, the data splitting setup must align with the real-world use case of the model to avoid issues like row-wise leakage and over-optimistic model performance.

I spent 5 hours understanding more about the Delta Lake table format

VuTrinh. • 179 implied HN points • 04 May 24
🕹 Technology Database Performance optimization Data Engineering Cloud Storage Software Development
  1. Delta Lake is designed to solve problems with traditional cloud object storage. It provides ACID transactions, making data operations like updates and deletions safe and reliable.
  2. Using Delta Lake, data is stored in Apache Parquet format, allowing for efficient reading and writing. The system tracks changes through a transaction log, which keeps everything organized and easy to manage.
  3. Delta Lake supports advanced features like time travel, allowing users to see and revert to past versions of data. This makes it easier to recover from mistakes and manage data over time.

Edition 32: BigCo is building in AppSec, but it's too early to get excited

Boring AppSec • 23 implied HN points • 27 Jan 26
🕹 Technology Developer Tools AI Application Security Cybersecurity Cloud Computing Software Development Product Strategy
  1. Big tech's new AppSec tools are mostly demo-quality right now and aren't yet as capable as mature security products.
  2. This puts pressure on AppSec teams to justify buying dedicated tools or accept platform solutions, shifting the burden of proof onto security teams.
  3. The labs are motivated to build AppSec because LLMs generate lots of code and overwhelm review capacity, so more serious products will likely appear soon while platform and specialist vendors continue to coexist.

Machine Readable

Adjacent Possible • 474 implied HN points • 25 Jun 25
🕹 Technology Research Methods Knowledge Management Writing tools AI Tools
  1. Language models like AI can help researchers by making it easier to analyze and write about history. They serve as a tool to explore new ideas and angles in research.
  2. Using AI as a collaborator can enhance creativity in writing. It allows writers to experiment with different structures and topics without fully outsourcing their thoughts and decisions.
  3. While AI is helpful for summarizing and generating connections, it should not replace deep reading of primary sources. Engaging with the text is crucial for true understanding and insight.

A Beneficial AGI Manifesto

Eurykosmotron • 628 implied HN points • 25 Nov 23
🕹 Technology Artificial Intelligence Ethics Research Alignment Decentralization
  1. The time to create beneficial Artificial General Intelligence is now, with a clear idea of what needs to be solved.
  2. The development of AGI could lead to Artificial Superintelligence and a potential 'intelligence explosion'.
  3. Decentralized AGI development is crucial to ensure alignment with human values and to avoid monopolization by a few elites.

Preparing for Microsoft Security Copilot

Rod’s Blog • 496 implied HN points • 03 Jan 24
🕹 Technology Artificial Intelligence Cybersecurity Cloud Computing Monitoring Training
  1. Before adopting Microsoft Security Copilot, assess your current security situation by understanding assets, risks, vulnerabilities, and compliance requirements.
  2. Plan your integration strategy by deciding on which features to use, aligning with prerequisites such as licenses, and identifying user roles.
  3. Train your staff and stakeholders on how to use Microsoft Security Copilot, educate them about its benefits and challenges, and equip them with skills to operate and troubleshoot the service.

The Conversational Nature of Reality

The Joyous Struggle • 592 implied HN points • 05 Dec 23
📖 Philosophy Theory Dialogue Identity Reality
  1. The Antidebate project aimed to create a space for more meaningful public conversations, bridging the gap between debate and dialogue in addressing modern challenges.
  2. The concept of 'the conversational nature of reality' by David Whyte emphasizes the importance of the interaction between self and the world in shaping our existence and relationships.
  3. The evolution of the Antidebate project showcases the struggle of translating theory into practice, highlighting the complexities and uncertainties of introducing new social practices.

The Bear Cave #276

The Bear Cave • 513 implied HN points • 01 Jun 25
💰 Finance Market Analysis Executive Changes Financial News Investment strategy
  1. Activist reports are raising concerns about companies like Tempus AI and The Metals Company due to financial issues and past failures.
  2. There have been multiple executive resignations in various companies, indicating instability and potential problems within those organizations.
  3. A court case involving Grifols highlights the challenges short sellers face when providing critiques about companies, as their economic interests can complicate matters.

What’s the future of AI hardware?

Product Identity • 138 implied HN points • 17 Jun 24
🕹 Technology Tech Trends Gadgets Consumer Electronics Innovation AI hardware Product Design
  1. AI hardware is still finding its identity and purpose. It's not yet clear how AI will truly enhance our devices.
  2. New gadgets often create high expectations but can lead to disappointment. Companies may hype products that aren't fully developed.
  3. Innovation in hardware often combines old ideas with new technology. It might be better to improve existing devices than to create entirely new ones.

XZ Backdoor: Times, damned times, and scams

Rhea's Substack • 254 HN points • 30 Mar 24
🕹 Technology Software Holidays Security Analysis
  1. The recent discovery of a backdoor in the xz/liblzma tarball raises concerns about trust in the free software ecosystem.
  2. Analyzing the time patterns of code commits can reveal valuable insights about a developer's work habits and potential attempts at deception.
  3. Changing time zones to manipulate commit timestamps can be a deceptive tactic in software development, but inconsistencies can ultimately reveal the truth.

AI Roundup 149: Flash Forward

Artificial Ignorance • 71 implied HN points • 20 Dec 25
🕹 Technology Machine Learning Industry AI Policy Semiconductors Infrastructure Artificial Intelligence
  1. Google’s new Gemini 3 Flash is a faster, much cheaper workhorse model that quickly became the default, fueling a furious release race as APIs handle enormous token volumes.
  2. The AI data‑center boom is hitting a reality check: construction delays, pulled funding, and plunging valuations expose thin margins and big interest costs, while surging power demand raises environmental and political concerns.
  3. A simple 'skills' format for AI assistants is catching on, letting teams share repeatable workflows across platforms and paving the way for interoperable, reusable agent components.

#27: Long Google

Loeber on Substack • 407 implied HN points • 12 Jul 25
💰 Finance Investing Market Analysis Economic Trends Business strategy
  1. Google is undervalued right now because many investors are worried about how AI could disrupt its Search business. However, the total value of what Google has built is much greater than just Search.
  2. Google has strong advantages in the AI race, including the largest dataset and a wide range of products. This puts them in a better position to dominate the market compared to newer competitors.
  3. If Google successfully leverages its resources and leads in AI, it could become worth over $20 trillion in the coming years, unlocking huge opportunities as the tech evolves.

How Silicon Valley got rich

The Novelleist • 521 implied HN points • 28 May 25
💼 Business Wealth Inequality Economics Entrepreneurship Investing Corporate Governance
  1. The rise of Silicon Valley demonstrated how entrepreneurship and venture capital can change the economy. A group of engineers creating a new tech company set the stage for tech innovation and entrepreneurship in the region.
  2. Employee equity programs allowed many workers to gain a stake in the companies they helped build, leading to wealth creation among employees. However, there is a growing inequality, where top executives earn much more than regular workers.
  3. For a fairer economy, we need to increase employee ownership in companies. This could help reduce wealth inequality and provide more opportunities for workers to benefit from their contributions.

The BoJ is Trapped

The Dollar Endgame • 279 implied HN points • 19 Mar 24
💰 Finance Interest Rates Inflation Central Bank Monetary Policy
  1. The Bank of Japan raised its rates for the first time in years, adjusting its primary goal for short-term interest rates and marking its first rate hike since 2007.
  2. The Bank of Japan previously used Negative Interest Rate Policy to stimulate borrowing and lending to revitalize Japan's sluggish economy.
  3. The Bank of Japan has ceased certain policies but will continue to print money, maintain low rates, and combat potential inflation, as seen through their recent monetary announcements.

Issue #144: Capital One Snaps Up Brex, BitGo Goes Public, And PayPal Bets Big on Agentic AI

Fintech Radar • 23 implied HN points • 26 Jan 26
💰 Finance M&A Payments Crypto Banking Investing Regulation AI Fintech
  1. Big banks are buying modern fintechs to get technology and customers fast, and Capital One’s purchase of Brex shows consolidation can still deliver big wins for founders even at lower valuations.
  2. Crypto infrastructure and tokenized assets are back in favor — BitGo’s IPO and large tokenization raises signal strong institutional demand for regulated custody and on‑chain securities.
  3. Payments and commerce are shifting toward agentic AI and deeper embedded finance, with deals like PayPal buying Cymbio and products like after‑purchase BNPL showing a land grab for AI-driven checkouts and merchant plumbing.

TBM 339: Update and Clarifications

The Beautiful Mess • 978 implied HN points • 09 Feb 25
💼 Business Work Culture Startups Entrepreneurship Investment Product Management
  1. This newsletter is independent of the author's employer, Dotwork, and he writes what he chooses without being paid for it.
  2. Dotwork is a startup that creates tools for product strategy and development, allowing teams to customize their work tools to fit their needs.
  3. The author enjoys sharing what he learns each week and believes in giving valuable content for free, trusting that good things will come back in the future.

Modern gestures

In Bed With Social • 554 implied HN points • 07 Jan 24
🕹 Technology Emerging technologies
  1. Innovative ways of communication using gestures are emerging globally.
  2. Somatic gestures are gaining popularity for relaxation and therapeutic purposes.
  3. Advancements in haptic technologies are reshaping human interaction with digital devices.

“The First Data Hire” Series: How to Survive and Succeed as a Solo Data Leader

SeattleDataGuy’s Newsletter • 400 implied HN points • 08 Jul 25
💼 Business Management Startups Infrastructure Workplace dynamics
  1. When you're the first data hire, you need to set clear priorities. Don't try to fix every problem for every team at once; figure out what really matters to the business.
  2. Building strong relationships is crucial. Talk to people regularly to understand their true challenges and needs, not just their requests.
  3. Focus on delivering value over creating flashy tools. Start simple and aim to solve real business problems instead of getting lost in technical perfection.

BERKSHIRE HATHAWAY’S TOBACCO HISTORY PART VII - CONWOOD: A REMARKABLE COMPANY

Reflections on "Going Down Tobacco Road" and Investing • 452 implied HN points • 16 Jan 24
💼 Business Finance Marketing Sales Operations Management
  1. Conwood was a unique and successful company acquired by Reynolds American in 2006.
  2. The management at Conwood had a dedicated leadership team that contributed to its success.
  3. Conwood's unique culture and focus on product quality and cost control made it a profitable venture.

The Bear Cave #278

The Bear Cave • 466 implied HN points • 15 Jun 25
💼 Business Stocks Economics Markets Investing Finance
  1. A new report revealed that Tenet Healthcare may have received overpayments from Medicare, suggesting possible financial troubles ahead.
  2. Several companies, including Avis Budget Group and Symbotic, are dealing with executive resignations amidst potential SEC investigations, indicating instability.
  3. Activist researchers are raising concerns about various companies, including Groupon and GRAIL, highlighting risks that could impact their future performance.

Where to draw the line?

Subconscious • 1225 implied HN points • 01 Dec 24
🕹 Technology Software Systems Design Engineering Innovation
  1. Breaking problems into smaller pieces helps us manage them better. It's like solving a big puzzle by working on one piece at a time.
  2. Modules or parts of a system allow us to focus on what’s important without worrying about the whole. This makes it easier to change and adapt parts as needed.
  3. Deciding where to draw boundaries in a system can greatly affect its future. It's important to understand what will change and what won’t before setting those boundaries.

I See the SubStack Culture Wars Have Started Up Again

Brad DeLong's Grasping Reality • 307 implied HN points • 14 Aug 25
🕹 Technology Content creation Publishing Media Internet Platforms
  1. SubStack has both supporters and critics. Some people like it for helping independent writers reach audiences, while others worry about its pricing and who benefits from its platform.
  2. The discoverability feature of SubStack is seen as a double-edged sword. While it helps writers gain readers, it can also make them dependent on the platform, limiting their options.
  3. Many creators feel stuck on SubStack due to its advantages, even if they have concerns about its practices. This highlights the struggle of balancing the need for exposure with the desire for better platforms.

The Venture Capitalist's Death Trap: Follow-on Investments | VC Jobs

Venture Curator • 199 implied HN points • 23 Apr 24
💼 Business Venture Capital Startup funding Product-Market Fit
  1. Poor decisions in follow-on investments can be the biggest risk of value destruction for VCs.
  2. Time and effort in VC decision-making are often misaligned, with more focus on initial investments than follow-on.
  3. Two simple methods to determine Product-Market Fit are through retention curves and Net Promoter Scores.