The hottest Substack posts right now

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Linux Context Switching Internals: Part 1 - Process State and Memory

Confessions of a Code Addict • 1106 implied HN points • 29 Dec 24
🕹 Technology Computer Science System Architecture Software Operating Systems Programming
  1. Context switching allows a computer to run multiple tasks by efficiently switching between different processes. It's important to understand it because it affects a system's performance.
  2. The Linux kernel uses specific structures, like 'task_struct' and 'mm_struct', to manage process states and memory. These structures help keep track of what each process is doing and how it uses memory.
  3. When a process runs out of CPU time or needs to wait, the kernel uses flags to decide when to switch to another process. This ensures that all processes get a chance to run, even if some are waiting for resources.

Procella - The query engine at YouTube

VuTrinh. • 79 implied HN points • 29 Jun 24
🕹 Technology Cloud Computing Database Systems Analytics Data Engineering
  1. YouTube built Procella to combine different data processing needs into one powerful SQL query engine. This means they can handle many tasks, like analytics and reporting, without needing separate systems for each task.
  2. Procella is designed for high performance and scalability by keeping computing and storage separate. This makes it faster and more efficient, allowing for quick data access and analysis.
  3. The engine uses clever techniques to reduce delays and improve response times, even when many users are querying at once. It constantly optimizes and adapts, making sure users get their data as quickly as possible.

AI #95: o1 Joins the API

Don't Worry About the Vase • 1164 implied HN points • 19 Dec 24
🕹 Technology AI Programming Data science Innovation Software
  1. The release of o1 into the API is significant. It enables developers to build applications with its capabilities, making it more accessible for various uses.
  2. Anthropic released an important paper about alignment issues in AI. It highlights some worrying behaviors in large language models that need more awareness and attention.
  3. There are still questions about how effectively AI tools are being used. Many people might not fully understand what AI can do or how to use it to enhance their work.

The MCP Freemium Strategy

Good Better Best • 3 implied HN points • 27 Feb 26
💼 Business Monetization Distribution AI Product Pricing SaaS
  1. MCPs let LLMs discover and call your product, making them a powerful new distribution channel that’s different from traditional APIs.
  2. Making MCP access free is often the right play because it boosts discoverability and user value, while usage limits or guardrails can nudge heavy users to upgrade.
  3. MCPs show up three ways — as a feature, a usage accelerant, or to power agentic workflows — and each style can be monetized with smart quotas or plan design.

Briefing: Shopify Magic, Vision Pro Zoom, AX vs UX

Department of Product • 393 implied HN points • 01 Feb 24
🕹 Technology AI Tech Companies Software Development Remote work Products
  1. MultiOn and Arc Browser are challenging the assumption that users interacting with products are human by automating browsing tasks
  2. Shopify introduced over 100 new product updates in its Winter Edition, including a media editor for generating product images instantly
  3. Google, PayPal, Zoom, TikTok, and OpenAI all revealed new features and products this week, showcasing advancements in technology
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@adlrocha - Is N=NP?

@adlrocha Weekly Newsletter • 64 implied HN points • 14 Dec 25
🕹 Technology Complexity Theory Cryptography Algorithms Computer Science Optimization Quantum Computing Artificial Intelligence
  1. Complexity theory measures how much time and memory algorithms need so we can tell which problems scale feasibly and which become intractable. It separates problems that are merely computable from those that are practically solvable before resources run out.
  2. P contains problems solvable in polynomial time, while NP contains problems whose solutions can be verified quickly even if they seem hard to find. NP-Complete problems are the hardest in NP because every NP problem can be reduced to them, and NP-Hard problems are at least that hard but not necessarily verifiable quickly.
  3. If P = NP, many cryptographic systems would break because one-way functions would no longer exist. At the same time, P = NP would let us solve huge optimization and AI problems exactly and efficiently, radically changing many fields.

All Time High Everything

Deep Pulusani - Risk • 222 implied HN points • 19 Sep 25
💰 Finance Pensions Wealth Investing Real Estate Commodities Equities Monetary Policy Macro
  1. Asset prices are at all-time highs, so wages and earned income matter less for net wealth and rate cuts/additional liquidity mostly benefit asset owners while eroding purchasing power.
  2. Monetary policy and political incentives now push to support equity prices—Fed easing, vast retirement savings into stocks, and global dollar flows (plus a weakening dollar) are lifting both equities and gold together.
  3. Demographics and fiscal choices are shifting wealth toward older generations and burdening the young, leaving three plausible paths ahead: sustained productivity-led gains, a tech/AI-driven bubble and bust, or an inflation/currency-driven market that masks real weakness.

The Top 10 Generative AI Advancements in 2023

Rod’s Blog • 515 implied HN points • 22 Dec 23
🕹 Technology AI Image Generation Language Models
  1. Generative AI has seen significant advancements in 2023, with breakthroughs like GPT-4, DALL-E, and open-source models like Llama 2 democratizing access to this technology.
  2. Technological innovations like Mistral 7B for text embedding, StyleGAN3 for image synthesis, and Jukebox 2.0 for music composition showcase the diverse applications of generative AI.
  3. Models such as AlphaFold 3 for protein structure prediction, DeepFake 3.0 for face swapping, and BARD for poetry writing highlight the versatility and impact of generative AI in various fields.

Why Do Great Ideas Often Fail The 'Elevator Pitch' Test? | VC Jobs

Venture Curator • 179 implied HN points • 30 Apr 24
💼 Business Investor Relations Venture Capital Market Strategies Startup funding
  1. Raising capital is a sales process where founders sell trust and confidence in building something valuable. Understanding VC decision-making dynamics increases the likelihood of closing deals.
  2. Knowing the structure and decision processes of VC firms can help founders navigate partnerships and improve their chances of success.
  3. The key to success in VC pitch meetings is building relationships with various partners within a firm to gain broader support and increase the probability of getting to a 'yes.'

Why Insurance Companies Are Rationally Failing Their Social Purpose

Software Design: Tidy First? • 1391 implied HN points • 25 Oct 24
💼 Business Insurance Risk management Investing Economics Finance
  1. Insurance is meant to convert risks into opportunities, allowing people to buy homes and start businesses by protecting lenders against losses. But it's complicated when companies only want to insure low-risk customers.
  2. Insurance companies often cut back on the risks they cover to stay competitive and offer lower prices, which means they might not support those in need, like entrepreneurs with health issues.
  3. For insurance to work as it should, companies need to stop focusing solely on low-risk clients. They should start covering real people, including those who are a bit riskier, to provide the societal benefits that insurance was originally designed for.

the puer and puella aeternus

Midnight Musings • 59 implied HN points • 14 Jul 24
📖 Philosophy Psychology Self-awareness Archetypes Responsibility Personal Growth
  1. The puer and puella aeternus represent the idea of staying childlike and avoiding responsibility. This can lead to a life where people are stuck in a cycle of fun but don't achieve their true goals.
  2. People often chase happiness through pleasure without recognizing it might hold them back. Creating a reality based on fantasies can stop personal growth.
  3. To move forward, it's important to be aware of these childish tendencies and commit to meaningful work that requires responsibility and discipline. This helps create a more fulfilling life.

Relevance Realization, Cerebral Hemispheres, and the Reconciliation of Science and Mythology

Intimations of a New Worldview • 766 implied HN points • 05 Apr 23
📖 Philosophy Religion Science Culture Mythology Worldview
  1. The left and right hemispheres of the brain are involved in different cognitive styles, such as precision and generalization.
  2. There is evidence for the significant and systematic differences between the cerebral hemispheres, influencing how attention is allocated and relevance is realized.
  3. The conflict between science and mythology can be seen as analogous to the differences in cognitive styles between the left and right hemispheres, emphasizing the importance of integrating different approaches.

Five Important Yet Frequently Missed User Archetypes

Elena's Growth Scoop • 766 implied HN points • 11 Apr 23
💼 Business Product Development Customer Engagement Marketing Strategy Customer Experience
  1. Core users are important, but don't overlook other user archetypes.
  2. Different user archetypes like power users, viral users, champions, high-LTV users, and adjacent users play unique roles in shaping your business strategy.
  3. Identify and cater to each user archetype to ensure sustainable company growth.

Language models as community moderators

Escaping Flatland • 766 implied HN points • 07 Jun 23
🕹 Technology Social media AI AI Models
  1. Community moderation is effective because it mirrors real-life social interaction and distributes the task of policing the internet.
  2. Algorithmic content filtering on social media platforms may lead to lower conversation quality and increased conflict.
  3. AI models can support community moderation in self-selected forums, potentially enabling the growth of larger moderated communities.

NOTE TO SELF: On Katie Martin's "Magnificent Seven" Today

Brad DeLong's Grasping Reality • 353 implied HN points • 24 Jul 25
💼 Business Economic Policy Digital economy Tech Giants Investments Market Trends
  1. The 'Magnificent Seven' tech companies are dominating the market, making up 31% of the S&P 500. Their growth is impressive but it raises concerns about economic fairness.
  2. These companies are not just innovating; they're also extracting a lot of money from their positions in the market. They often make profits through platform fees and controlling access to resources.
  3. Investors need to look deeper into each company's story. Some are thriving due to strong tech advancements, while others are more about squeezing profits out of their current advantages.

Magic Cards and Knowledge Bottles

Adjacent Possible • 371 implied HN points • 24 Jul 25
🕹 Technology AI Productivity Information Management Digital Tools Innovation
  1. AI can enhance how we access and share information, making it easier to find expert knowledge on various topics.
  2. The concept of 'knowledge bottles' allows users to tap into curated expert advice whenever they need it.
  3. New technologies like featured notebooks can transform how we interact with content, offering personalized guidance and insights from trusted sources.

AI Roundup 148: GPT-5.2

Artificial Ignorance • 79 implied HN points • 12 Dec 25
🕹 Technology Business Hardware Infrastructure Policy Machine Learning AI Research Security
  1. OpenAI released GPT-5.2 (Instant, Thinking, Pro), which significantly improves performance on professional workflows like spreadsheets, coding, and multi-step projects while reducing hallucinations to make agents more enterprise-ready.
  2. The U.S. federal government is centralizing AI policy by threatening to override state rules and by allowing controlled chip exports to China for a revenue share, mixing regulatory power, national security concerns, and commercial incentives.
  3. Hollywood is adapting to generative AI: Disney struck a $1 billion deal letting users create short character videos under strict guardrails. This shows legacy studios will both license and tightly control AI-generated content while pursuing legal action over unauthorized model training.

Paying the SOC2 Screenshot Tax

Margins by Ranjan Roy and Can Duruk • 331 implied HN points • 31 Jul 25
💼 Business Finance SaaS Compliance Startups Technology
  1. SOC2 compliance can be seen as a necessary hurdle for small tech companies trying to build trust with larger clients, but it often feels like a tax rather than a true security upgrade.
  2. The process of obtaining SOC2 involves significant effort, including hiring auditors and filling out extensive spreadsheets, which can distract startups from product development.
  3. There's a growing call for a better compliance system that continuously monitors security rather than relying on periodic checks, as the current method can feel outdated and ineffective.

How I Became a Venture Capitalist

The New Internet by Jeff Morris Jr. • 14 implied HN points • 12 Feb 26
💼 Business Entrepreneurship Fundraising Mentorship Careers Venture Capital Startups Investing
  1. You can move from operator to VC by building a public, trackable investing record and a clear thesis—start small with SPVs or angel checks and share your work openly.
  2. Traditional scout programs are broken: access is closed to insiders, scout performance is hidden, and the programs mainly create leverage for firms rather than career paths for scouts.
  3. A new season-based Scout Program aims to democratize access by letting anyone apply, giving each selected scout $100K, public profiles and leaderboards, and mentorship to help scouts build real track records and potentially raise funds.

PacBio Sells Short Read Tech To Illumina

ASeq Newsletter • 21 implied HN points • 02 Feb 26
💼 Business Restructuring Product Strategy Intellectual Property Corporate Finance M&A Biotech
  1. PacBio sold its short-read sequencing assets to Illumina for about $50M, which is far less than what it paid acquiring Omniome and Apton.
  2. PacBio’s short-read products never gained traction and Onso sales were minimal, and recent layoffs suggest the development teams are largely gone.
  3. The deal only buys PacBio roughly six months of additional runway, and Illumina is likely to hold the IP rather than immediately use it to build new platforms.

Sequencers From Singapore? No. But Interesting!

ASeq Newsletter • 14 implied HN points • 12 Feb 26
🕹 Technology Diagnostics Genomics Biotech Molecular Biology
  1. AITBioTech is selling a small DNA sequencer (ABSEQ) with iSeq/MiSeq-level specs, but it appears to be a rebranded DNBSeq device using the same luminescence-based chemistry.
  2. Their qPCR system also looks like an OEM product from Taiwanese manufacturers, indicating the company rebrands existing instruments rather than building wholly new hardware.
  3. Rebranding and OEM sourcing is common in the sequencing industry, and while OEMs could eventually offer customized, integrated instruments for clients, that kind of tailored integration probably isn’t imminent.

TBM 334: The Capacity Allocation Illusion

The Beautiful Mess • 1031 implied HN points • 19 Jan 25
💼 Business Operations Management Finance Strategy Innovation
  1. Capacity in software development isn't just about how many hours people work. It's more complicated and depends on past investments and the overall work environment.
  2. Oversimplifying capacity can lead to poor decisions. You need to consider many factors, like team dynamics and the quality of work, rather than just time spent on tasks.
  3. When asked about spending, it's better to focus on how investments improve future capacity instead of just breaking down hours. Understanding the bigger picture is key.

Moving Mental Mountains

Software Design: Tidy First? • 1369 implied HN points • 28 Oct 24
💼 Business Management Economics Finance Technology Workforce
  1. Now it's easier and cheaper to explore data and insights, so we should be more curious and take the time to investigate our 'I wonder' moments.
  2. Emotional reactions often replace actual work, and we need to focus on doing the analytical tasks instead of just responding emotionally.
  3. When analyzing data, start small and make sure your findings are accurate. Sharing what you learn can help you grow and encourage collective knowledge.

GroupBy #36: Agoda- How We Solve Load Balancing Challenges in Apache Kafka, How to reduce your Snowflake cost

VuTrinh. • 139 implied HN points • 21 May 24
🕹 Technology Infrastructure Software Development Data Engineering Cloud Computing Cost Optimization
  1. Working on pet projects is fun, but it's important to have clear learning goals to actually gain knowledge from them.
  2. When using tools like Spark or Airflow, always ask what problem they solve to understand their value better.
  3. To make your projects more effective, think like a user and check if they get what they need from your data systems.

Origins S13 Postseason has begun!

The Lunacian • 414 implied HN points • 09 Jul 25
🕹 Technology Online Communities Gaming Blockchain Esports Digital Currency
  1. The Origins S13 Postseason has started, and the top player is TCO Nub. Thanks to everyone who participated in the competition!
  2. The Elite 8 tournament kicks off on July 13th, offering a prize pool of 3,000 AXS. Participants will also get Morph Tickets to help prepare.
  3. Don't forget, your collectible Axie tickets determine your rewards and AXS distribution. More tickets mean more prizes!

Academy Discount is LIVE! (+ The Next Bull Run)

DeFi Education • 659 implied HN points • 07 Nov 23
🔮 Crypto Investing Cryptocurrency Decentralized Finance Blockchain Market Analysis
  1. There is a $100 discount available for the DeFi Academy until November 9, 2023. This is a good chance for new members to join.
  2. Despite some ongoing challenges in the crypto market, there are signs of recovery and potential for a bull run. Staying informed and prepared can help capitalize on this.
  3. Building skills, capital, and the right mindset is essential for success in crypto. Focus on what you're good at and keep improving yourself.

China’s AI Gambit: Code as Standards

ChinaTalk • 385 implied HN points • 10 Jul 25
🕹 Technology International relations Innovation Open Source AI
  1. China aims to increase its global influence in AI by exporting technology and setting international standards. This is similar to how the U.S. spread TCP/IP as the internet standard.
  2. The country is encouraged to develop a robust open-source ecosystem to attract international developers and early adopters. This includes creating user-friendly tools and resources for building AI models.
  3. Chinese talent should be encouraged to work abroad to help spread its technologies and establish standards globally. Connecting with international communities can strengthen China's position in the global tech landscape.

The Oddest Man Out Among Our $Hundred-Billionaires: Elon Musk

Brad DeLong's Grasping Reality • 492 implied HN points • 04 Jun 25
💼 Business Market Trends Entrepreneurship Investment Corporate strategy Economics
  1. Elon Musk's wealth, largely tied to Tesla, is facing challenges as the company’s profit growth may not continue. The recent surge in Tesla's sales was helped by market conditions and celebrity status, but that charm seems to be fading.
  2. Many billionaires, especially those in tech, have consistent income from their businesses. In contrast, Musk's financial future looks uncertain as competition in the electric vehicle market increases and his brand image shifts.
  3. The reasons people used to buy Teslas included its innovation and eco-friendliness. Now, with Musk's controversial actions, many of those who once supported the brand are distancing themselves, which could hurt Tesla's future sales.

Please take my weird moral puzzles quiz

DYNOMIGHT INTERNET NEWSLETTER • 468 implied HN points • 17 Jun 25
📖 Philosophy Ethics Metaphysics Existentialism Logic Morality
  1. A survey is created to gauge people's moral beliefs on unusual scenarios that challenge common ethics. It involves questions about difficult decisions we might face.
  2. The scenarios include serious topics like abortion and euthanasia, but also quirky ideas involving advanced AIs and future societies. This mix aims to provoke thought about morality.
  3. Participants are encouraged to respond honestly and intuitively, with the creator assuring no tricks are involved in the survey.

ANOTHER: The Inside Gold-For-Oil Deal That Could Rock The World's Financial Centers

The Dollar Endgame • 339 implied HN points • 19 Feb 24
💰 Finance Monetary System Economics Markets Geopolitics Gold
  1. A controversial blogger in 1997 exposed a hidden gold-for-oil deal that impacted global geopolitics.
  2. Gold prices might have been suppressed to maintain the international monetary system's stability.
  3. The delicate balance between gold, oil, and currencies has historical roots and holds the power to disrupt financial systems.

The KQL Mysteries: Chapter 6

Rod’s Blog • 416 implied HN points • 22 Jan 24
🕹 Technology Data Analysis Cybersecurity Network Security
  1. Jon discovers that the Night Princess was behind the cyber-attacks on his company, manipulating data, planting false clues, and covering her tracks.
  2. Jon uses KQL skills to investigate the Night Princess's activities by analyzing logon events and network events in the company's database.
  3. Collaboration between the Night Princess, CyberGhost, and DarkAngel in the cyber-attacks surfaces, raising questions about the Night Princess's identity and motives.

A Business Upended: The Streaming Disruption of the Movie & Broadcasting Business

Musings on Markets • 759 implied HN points • 12 Sep 23
💼 Business Streaming Media Finance Television Entertainment
  1. The rise of streaming services like Netflix has drastically changed how we consume movies and shows. Many people are moving away from cable TV and preferring the convenience of streaming platforms.
  2. The movie industry may face a fate similar to the music industry due to streaming disruptions. Just as music labels struggled to adapt, traditional movie companies might find it hard to survive without significant changes.
  3. Streaming has led to increased content production but also rising costs. While there's more choice for viewers, the quality can sometimes suffer, leaving many overwhelmed by the options available.

Quitting freelancing to build products

Kenny’s Sub • 239 implied HN points • 01 Apr 24
💼 Business Product Development Freelancing Client Management Marketing Entrepreneurship
  1. Freelancing can consume a lot of time and energy, making it hard to work on personal projects. Focusing entirely on building your own products might be a better choice for growth.
  2. Getting paid as a freelancer can be tricky and often requires chasing clients. Having good platforms can help with payment security and reduce the hassle.
  3. When developing products, it's important to try out various ideas. Finding what works best often means experimenting and adjusting based on feedback and demand.

Numlock News: October 24, 2023 • Moon, Scares, Deus Ex Machina

Numlock News • 707 implied HN points • 24 Oct 23
💼 Business Social media Research Advertising Entertainment Real Estate
  1. Author promoted the launch of their new book 'You Are What You Watch' and shared a discount code for purchases.
  2. Jump scares in horror movies have been declining since the mid-2010s, hitting a 20-year low in 2021.
  3. Growth of Korean AI-driven Bible chatbot service used by 20% of Protestant ministers to write sermons.

The very first interview about Linux with Linus Torvalds - Oct 28, 1992

The Lunduke Journal of Technology • 5170 implied HN points • 16 Apr 23
🕹 Technology Interview Open Source Operating Systems Linux Programming
  1. The first interview about Linux with Linus Torvalds was published in a small E-Mail newsletter in 1992.
  2. The newsletter was significant as it was the first written specifically for Linux and contained the first interview ever with Linus Torvalds about Linux.
  3. Linus Torvalds started working on Linux after taking a UNIX and C course at university, and the system evolved from a terminal emulator to a UNIX-like system.

Debunking 10 Popular Myths About DeepSeek

The Algorithmic Bridge • 976 implied HN points • 28 Jan 25
🕹 Technology Artificial Intelligence Tech industry Open Source Data Privacy Machine Learning
  1. DeepSeek models can be customized and fine-tuned, even if they're designed to follow certain narratives. This flexibility can make them potentially less restricted than some other AI models.
  2. Despite claims that DeepSeek can compete with major players like OpenAI for a fraction of the cost, the actual financial and operational needs to reach that level are much more substantial.
  3. DeepSeek has made significant progress in AI, but it hasn't completely overturned established ideas like scaling laws. It still requires considerable resources to develop and deploy effective models.