The hottest Substack posts right now

according to Hacker News
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Open YOUR Grand Arena Booster Boxes now!

Ronin’s Newsletter • 49 implied HN points • 13 Jan 26
🔮 Crypto Blockchain Gaming NFTs Play-to-Earn Community events
  1. A Booster Box contains 30 Standard Packs (150 cards total), giving you lots of cards to build and merge lineups ahead of Season 1.
  2. Standard Packs have 5 cards and cost 300 Gems ($3), while Lucky Packs (1500 Gems) and Scheme Packs (600 Gems) offer different rarities and card types.
  3. Each Booster Box includes one Moku Mini Axie accessory and a chance at raffle prizes, and you can join Moku’s Discord pack-ripping events to open packs with the community.

Ticker Take: a weekly newsletter on investing.

Jon’s Newsletter • 179 implied HN points • 26 May 24
💰 Finance Investing Stocks Market Trends Economic Analysis Corporate Finance
  1. Companies with high profit margins are doing really well. For example, Nvidia has a gross profit margin of 78%, which is impressive compared to others like Amazon and Apple.
  2. There are good opportunities in the bond market now. After a long time, stocks aren't the only option for investors looking for decent returns.
  3. Amazon is expected to overtake Walmart in sales next year. With Amazon's growth in cloud services, it's on track for $711 billion in revenue, compared to Walmart's $703 billion.

“We Are Not as Wealthy as We Thought We Were”: Postscript 3

Erdmann Housing Tracker • 63 implied HN points • 08 Jan 26
💰 Finance Urban Economics Real Estate Housing policy Mortgages Affordability Construction
  1. A nationwide scarcity premium—people paying extra for limited location/lots rather than for actual housing—explains almost all of the elevated home prices and rents, especially in constrained metro areas. It will only fade as supply rises or closed-access cities reform, otherwise it could persist for decades.
  2. Tighter mortgage access since 2008 raised effective rents and shifted value away from ownership of structures toward land/scarcity, hitting lower-income neighborhoods hardest and increasing gross rental yields. This change also reduced who can buy and altered the kinds of homes that get built.
  3. A rapid correction of the scarcity premium requires a big building boom and a return toward earlier lending norms, which could cut the adjustment to 10–15 years; blocking construction or restricting investors will stretch the correction out over many decades.

What Is A Stock Split and What Causes It?

Concepts of Finance 🧠 • 239 implied HN points • 02 May 24
💰 Finance Investing Stock Markets Corporate Actions Financial Education Market Trends
  1. A stock split means one expensive share is split into multiple cheaper shares, which keeps the total value the same. It makes shares more affordable for buyers, but existing shareholders get more shares automatically.
  2. Companies often do stock splits to appeal to smaller investors when prices get too high. Lower prices can boost demand because people see it as a better deal, even though the company's overall value doesn't change.
  3. A reverse stock split combines shares to increase their price and can be seen negatively by investors. It often suggests a company is struggling, as they might be trying to inflate prices without real improvements.

Mantic Monday 7/31/23: Room Temperature Superforecaster

Astral Codex Ten • 6056 implied HN points • 01 Aug 23
🕹 Technology Cryptocurrency Regulations Predictions Markets
  1. CFTC's regulation on prediction markets sparks debate about potential rigging of US elections
  2. There is curiosity and activity in predicting the possibility of a room temperature superconductor
  3. PredictIt faces legal challenges but gets a stay of execution, highlighting the complexities in regulating real-money prediction markets
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Tokenization in large language models, explained

The Counterfactual • 239 implied HN points • 02 May 24
🕹 Technology Natural Language Processing Tokenization Language Models AI Machine Learning
  1. Tokens are the building blocks that language models use to understand and predict text. They can be whole words or parts of words, depending on how the model is set up.
  2. Subword tokenization helps models balance flexibility and understanding by breaking down words into smaller parts, so they can still work with unknown words.
  3. Understanding how tokenization works is key to improving the performance of language models, especially since different languages have different structures and complexity.

#44: Thought Experiment 2 - Why ever not AI SDRs?

OSS.fund Newsletter • 56 implied HN points • 15 Jan 26
💼 Business Operations Sales Hiring Talent Automation Strategy Org Design
  1. AI agents can qualify leads, personalize outreach, and book meetings faster and more reliably than junior SDRs.
  2. AI SDR platforms cost far less and ramp in weeks instead of months, so automate qualification and redeploy junior reps to relationship-building, strategic deal work, and account management.
  3. Audit your SDR activity to tag rules-based versus high-touch opportunities; if most qualification is automatable, freeing that time will speed learning, improve retention, and raise win rates.

Dishoom's $400m Restaurant Playbook

SatPost by Trung Phan • 148 implied HN points • 20 Nov 25
💼 Business Marketing Entrepreneurship Economics Finance Operations
  1. Dishoom's unique marketing strategy involves gamifying the dining experience, like letting customers roll dice for a chance to win a free meal. This adds excitement and encourages more people to visit during peak times.
  2. The restaurant blends rich cultural influences from Bombay's Irani cafés with modern dining, making it a middle ground between casual curry houses and high-end Michelin-star restaurants. This allows Dishoom to appeal to a broad range of customers.
  3. Dishoom's approach to expanding includes maintaining quality and the dining experience as core priorities, showing that focus on customer satisfaction can lead to significant growth in sales and popularity.

TBM 369: Sources Of Truth

The Beautiful Mess • 502 implied HN points • 27 Jul 25
💼 Business Strategic Planning Information Systems Management Product Development Organizational Behavior
  1. Many problems in product development aren't really about finding the 'truth.' Teams often struggle because they can't agree on what the truth is or if they even want to find it.
  2. Different groups in a company might have their own definitions and understandings of initiatives and goals, creating confusion. Trying to standardize everything can lead to teams working around rules instead of working effectively.
  3. While some companies simplify processes to make things easier, they can end up losing important details. It’s crucial to find a balance between understanding the complexity of the work and not getting overwhelmed by it.

Import AI 363: ByteDance's 10k GPU training run; PPO vs REINFORCE; and generative everything

Import AI • 419 implied HN points • 04 Mar 24
🕹 Technology Language Models AI Research Reinforcement Learning Ethics
  1. DeepMind developed Genie, a system that transforms photos or sketches into playable video games by inferring in-game dynamics.
  2. Researchers found that for language models, the REINFORCE algorithm can outperform the widely used PPO, showing the benefit of simplifying complex processes.
  3. ByteDance conducted one of the largest GPU training runs documented, showcasing significant non-American players in large-scale AI research.

Issue #7 - The Business Strategy, Where The Data Journey Starts

The Data Ecosystem • 179 implied HN points • 26 May 24
💼 Business Data Performance Strategy Analytics Leadership
  1. A business strategy is the game plan for a company to reach its goals. It involves having a clear vision, mission, and set of goals to guide the organization.
  2. Good business strategies have defined components that everyone in the company knows. This helps avoid confusion and keeps everyone focused on the same objectives.
  3. Data plays a crucial role in shaping modern business strategies. Companies need to integrate data and analytics into their plans to make informed decisions and stay competitive.

The Sequence Knowledge #792: EVERYTHING you Need to Know About Synthetic Data Generation

TheSequence • 49 implied HN points • 20 Jan 26
🕹 Technology Generative models AI Research Reinforcement Learning Computer Vision Natural Language Machine Learning Data science
  1. Synthetic data is a practical scaling lever that fills coverage gaps and builds long-tail capabilities by creating targeted examples instead of waiting for rare real-world labels.
  2. Core methods include generative synthesis, rephrasing/paraphrasing, multi-turn dialogue synthesis, and RL trajectory generation, each tailored to different tasks like images, instructions, conversations, or environment rollouts.
  3. The focus is on quality over quantity: tight specs, automatic verification, diversity controls, and eval-driven feedback let teams steer capabilities, improve class balance, protect privacy, and iterate quickly.

STEERing the battery industry in right direction

Intercalation Station • 719 implied HN points • 09 Jan 24
🕹 Technology Market Trends Supply Chain Government support Energy Storage
  1. Sodium-ion battery technology has potential cost advantages and safety improvements but faces challenges in integration and market scale.
  2. Li-ion will likely continue to dominate the energy storage market by 2030, and the need for medium to long duration storage solutions is being assessed.
  3. Addressing material limitations in energy storage requires improved material sourcing, supply chain transparency, economic considerations, technical challenges, and community support.

Beyond Snowflake: A Problem-Solver’s Guide to Distributed ID Generation

Software Bits Newsletter • 51 implied HN points • 04 Jan 26
🕹 Technology Performance Databases Distributed Systems Operating Systems Systems Design Algorithms Scalability
  1. Memory allocator patterns — like per-node caches, hierarchical range grants, batching, and prefetching — transfer cleanly to distributed ID generation and let services hand out unique IDs locally with almost no coordination.
  2. There is no one-size-fits-all ID strategy: slabs and hierarchical ranges give extreme throughput and B-tree locality at the cost of wasted IDs and weaker global ordering, consensus gives strict global ordering and durability but costs latency and availability, and Snowflake-style schemes sit in between.
  3. The best engineering move is methodological: spot a related solved problem, extract its core principles (hierarchy, locality, batching, prefetching), and adapt them while accounting for distributed realities like partial failure and unbounded latency.

When AI collides with corporate IT

In My Tribe • 546 implied HN points • 01 Jul 25
🕹 Technology Software Development AI Organizational Change Innovation
  1. Companies will become smaller and simpler, with fewer layers of management. This means a quicker decision-making process and more direct responsibility for employees.
  2. Traditional corporate IT systems are very complicated and slow to change. It takes a lot of time and approval, making innovation difficult.
  3. As AI-native employees rise, they will streamline and improve IT systems quickly. This will allow for easier implementation of new ideas without getting stuck in old processes.

Sanity Check

DeFi Education • 1039 implied HN points • 04 Oct 23
🔮 Crypto Market Trends Decentralization Regulation Investing Blockchain
  1. Some bad actors in the crypto world are facing legal consequences, which can lead to a healthier market. With fewer scams, investors might feel more confident returning to crypto after previous losses.
  2. US regulators are starting to change their stance on crypto. This shift could allow more compliant options for Americans to safely invest in digital currencies through trusted companies.
  3. Big companies are beginning to embrace crypto, targeting younger investors. This could lead to more mainstream adoption, but many might have to pay fees for access instead of handling their own assets.

Make it simple

Venture Prose • 519 implied HN points • 04 Feb 24
💼 Business Meetings Simplicity Productivity Efficiency
  1. Efficiency comes from making every minute more valuable, intentional, and concrete.
  2. Being intentional about how you spend time, both in quantity and quality, can make you more present and purposeful.
  3. Simplicity is key - from making a good first impression in 1 minute to keeping meetings concise and effective.

Investors bet on Waymo's acceleration

Alex's Personal Blog • 98 implied HN points • 17 Dec 25
💼 Business International Supply Chain Technology Investment Autonomous Vehicles AI Startups
  1. Big AI labs are deliberately diversifying cloud and chip partners and raising massive sums to secure compute capacity, which spreads vendor dependence across several big players. This reduces single-vendor risk but also deepens ties between top cloud and chip companies and the major AI models.
  2. The US is using public funds and joint ventures to build domestic critical-minerals processing capacity, backing a Korea Zinc-led smelter project with loans, equity stakes, and subsidies to onshore supply chains. That approach hands significant control to U.S. public and private actors while accelerating industrial capacity at scale.
  3. Waymo is gearing up to rapidly scale its fleet and expand into many new cities, including international markets, and is courting large financing at a roughly $100B valuation because investors expect quick revenue growth. Its main risks are eroding rider and regulator trust if it moves too fast and tougher competition from rivals.

The Tiger Show

Caitlin’s Newsletter • 1303 implied HN points • 01 Feb 25
📖 Philosophy Ethics Humanism Cosmology Existentialism Metaphysics
  1. We should not let the least capable control our world. People often feel helpless, but we have the power to change things for the better.
  2. Inside us, there's a great potential that we often forget. We have the ability to stand up for our happiness and well-being.
  3. The current state of things can change when we decide to take a stand. We are stronger than we realize and can make a difference.

Thursday State of the SubStacks: Walking the Tightrope Over the Attention-Economy Abyss

Brad DeLong's Grasping Reality • 138 implied HN points • 19 Nov 25
💼 Business Creator Economy Platforms Media Monetization Startups VC Funding Product Design
  1. The platform is walking a tightrope: it needs discoverability to help writers grow paying audiences without turning into an ad-driven attention machine that just maximizes time on the app.
  2. The new Notes/social feed creates real risks — its algorithmic tuning can push short-form engagement at the expense of longform newsletters and amplify extreme or divisive voices, making moderation and content choices thorny.
  3. Substack (and rivals) need transparent, data-driven experiments with adjustable dials like teaser samples, patronage/tips, and premium perks so writers can sustainably earn while protecting an open public-good core.

The Stone Soup Theory of Billionaires

Altered States of Monetary Consciousness • 1743 implied HN points • 14 Nov 24
💼 Business Economics Wealth Industry Capitalism Entrepreneurship
  1. Billionaires aren't the only ones who create big companies; they often stand out as focal points, while many workers and contributors help build the actual business. It's like the Stone Soup story, where one person starts a project, but it takes many others to make it successful.
  2. The economy works as a collective where everyone contributes and receives based on their input. Just like making soup, if you bring ingredients, you get to enjoy the final product, and if many people pitch in, the result is better for everyone.
  3. Billionaires often claim credit for creating jobs, but in reality, their wealth relies on the hard work of countless others. The billionaire benefits from workers who do the real labor, much like the Stone Souper who needs villagers to make the soup.

What's going on with electric cars?

Off to Lunch • 511 implied HN points • 06 Feb 24
💼 Business Economic Impact Industry challenges Electric Vehicles Government Strategy Sales Data
  1. Sales of battery electric cars to private buyers in the UK fell by 25% in January.
  2. The UK government's plan to end the sale of new petrol and diesel vehicles by 2035 is facing criticism for slow progress.
  3. Challenges in the electric vehicle sector include concerns about demand, government strategies, and business operations.

Things That Don't Change

DeFi Education • 859 implied HN points • 15 Nov 23
🔮 Crypto DeFi Blockchain Finance Investing Innovation
  1. Consumers will always want cheaper, faster, and more accessible financial services. These basic needs won't change over the years.
  2. DeFi allows for innovation without needing a lot of money or big companies. Even small developers can create useful financial tools.
  3. The banking industry is slow to adapt, while DeFi can offer services anytime and anywhere. This gives DeFi a big advantage over traditional banks.

Nativism is going to wreck the tech economy

Alex's Personal Blog • 164 implied HN points • 14 Nov 25
🕹 Technology Startups AI Economics Labor Immigration
  1. Nativism in U.S. politics may hurt the tech economy by limiting high-skill immigration, which is crucial for growth and innovation. This could lead to tech companies hiring less domestic talent and more workers from abroad.
  2. AI is affecting the job market negatively, especially for new graduates. More entry-level jobs are disappearing, making it harder for young people to find work and pay off student loans.
  3. Despite concerns about economic weakness, investment interest in tech startups, especially in AI, remains strong. Companies like Cursor are raising large amounts of capital, indicating that the tech sector may still have opportunities for growth.

Delivering dubious news in the blue, blue skies

Conspirador Norteño • 24 implied HN points • 09 Feb 26
🕹 Technology Social media Automation Misinformation Content Moderation Platform policy
  1. Many Bluesky accounts use dlvr.it to automate posting, so automated news feeds are common across the platform.
  2. A single automated account has posted tens of thousands of links to right-wing sites like Breitbart and Newsmax, churning out hundreds of posts per day but receiving very little engagement.
  3. Those automated links show up under the dlvr.it domain in searches rather than the original sites, and the account recently renamed itself to include "bot," making the automation more obvious.

hypercapitalism and the AI talent wars

luttig's learnings • 499 implied HN points • 13 Jul 25
💼 Business Startups Employment Tech industry Compensation Investment
  1. The competition for AI talent is intense, leading to huge salary offers, which can really shake up the trust between companies and their employees. It makes people wonder if mission or money matters more now.
  2. Big companies have an advantage in attracting top talent, which makes it hard for smaller startups to compete. They need strong missions and enough resources to stand a chance in this new market.
  3. Investors must adapt to this changing landscape, as the old rules of fundraising don’t apply anymore. They need to rethink how they evaluate companies, especially those focused on AI.

Welcome to the Memory Palace!

The Memory Palace • 279 implied HN points • 16 Apr 24
📖 Philosophy History Education Memory Cognition Methods
  1. Memory palaces are a cool way to remember things by placing images in a familiar space. This method has been used for a long time in cultures that relied on oral storytelling.
  2. Having a strong memory was once a sign of a smart and educated person. Even today, memory competitions highlight how useful these techniques can be for everyone, not just the elite.
  3. Despite technology helping us remember more, memory is still important. Memory palaces encourage us to think about what information we value and want to keep in our minds.

GDP: Six Years of Zero Growth

Japan Economy Watch • 199 implied HN points • 16 May 24
💰 Finance Government spending Economy Interest Rates
  1. Japanese GDP has experienced zero growth in the past six years, with household consumption and business investment showing no positive change.
  2. Government spending hikes have prevented a worse decline in GDP, increasing by 8% from 2018.
  3. Despite a significant depreciation of the yen, exports have only increased by 4% over six years, indicating modest growth.

Browser Relay: When Your AI Assistant Gets Hands on Your Browser

Boring AppSec • 30 implied HN points • 26 Jan 26
🕹 Technology Automation Privacy Infrastructure AI Security
  1. Browser Relay gives your AI real "hands" in your browser — it can navigate, click, run JS, and read any page including sites you’re logged into, which makes tasks like summarizing bookmarks seamless.
  2. That power brings real security risks: the AI can access cookies and session data (so it could read or act in logged-in accounts), and web content can try prompt-injection, so be very cautious about which tabs you attach.
  3. Self-hosting puts you in charge of security, so follow best practices like using a dedicated Chrome profile, keeping the control server on loopback or Tailscale only, using separate tokens, and using isolated managed profiles for untrusted scraping.

The Ten Principles of Win-Win

Win-Win • 319 implied HN points • 02 Apr 24
📖 Philosophy Mindset Collaboration Wisdom Ethics
  1. The world has plenty to offer, so thinking there's not enough can hold you back. Focus on abundance and opportunities instead of scarcity.
  2. Life is always changing, so it's important to be flexible and adaptable. Sticking to rigid ideas can make it hard to enjoy the journey.
  3. Working together can create win-win situations. Instead of just looking out for yourself, think about how you can benefit others too.

Why does the frequency response of my DAC droop?

filterwizard • 19 implied HN points • 31 Aug 24
🕹 Technology Engineering Electronics Signal Processing
  1. A DAC's output might not represent the input signal accurately because it holds samples longer than expected. This can result in a drooping frequency response instead of a flat line.
  2. The output is shaped by a sinc function, where certain frequencies lose energy and create unwanted noise, making the signal less clear.
  3. Modern DACs, like sigma-delta types, don't have this droop problem. They use faster processes and digital filtering to provide a smoother, more accurate sound.

Don’t Panic About A Yen “Free Fall”

Japan Economy Watch • 239 implied HN points • 01 May 24
💰 Finance Currency Exports Trade Economy Intervention
  1. The danger is not a sudden financial crisis, but rather slow erosion of Japan's economic competitiveness and living standards.
  2. The yen's recent fluctuations do not indicate a free fall, but rather show volatility in the currency market.
  3. Japan has the resources to prevent a currency free fall and stabilize the yen value through interventions and its international assets.

OpenAI Enhanced Their API With Robust Structured Output Capabilities

Cobus Greyling on LLMs, NLU, NLP, chatbots & voicebots • 39 implied HN points • 12 Aug 24
🕹 Technology API AI NLP Development Data
  1. OpenAI has improved its API to ensure that outputs always match a set JSON format. This helps developers know exactly what kind of data they will get back.
  2. The previous method of generating JSON outputs was inconsistent, making it hard to use in real-world applications. Now, there's a more reliable way to create structured outputs.
  3. Developers can now use features like Function Calling and a new response format to make their apps interact better with AI, ensuring clearer communication between systems.