The hottest Development Substack posts right now

And their main takeaways
Category
Top Technology Topics

Top Links 1042 Global Crude Hierarchy, Price of Electricity, and African Food Riots.

Chartbook • 615 implied HN points • 15 Mar 26
🌍 World Politics Development
  1. The global crude market is structured like a hierarchy where oil type, supplier relationships, and buyer needs shape who gets what and at what price.
  2. Electricity prices are diverging sharply across countries, driven by differences in fuel costs, infrastructure, and policy decisions.
  3. Spiking food prices and shortages are triggering protests and riots in parts of Africa, exposing weaknesses in supply chains and social safety nets.

Roundup #78: Roboliberalism

Noahpinion • 17882 implied HN points • 27 Feb 26
💼 Business Development
  1. We still don’t know if AI caused a real productivity boom in 2025 — micro studies show task-level gains but macro data are noisy, subject to revisions, and other explanations exist.
  2. Building lots of new, high-end housing can actually lower rents for lower-income people by freeing up older, cheaper units — evidence from multiple cities supports this “Yuppie Fishtank” effect.
  3. The decline in extreme poverty has largely finished outside Africa, and because African poverty rates remain high while population grows, forecasts show global extreme poverty could rise again unless African growth or fertility patterns change.

AI & Python #29: Python Projects You Can Finish in a Weekend

Artificial Corner • 198 implied HN points • 31 Oct 24
🕹 Technology Development
  1. Working on Python projects is important because it helps you apply what you've learned. It's a great way to connect theory to practice and improve your coding skills.
  2. The article suggests projects for both beginners and advanced users, which helps cater to different skill levels. Starting with easier projects can build confidence before tackling more complex ones.
  3. Completing projects can also boost your motivation and help you create a portfolio. This can be really useful when looking for job opportunities or trying to showcase your skills.

What's new in Svelte: November 2024

The (Unofficial) Svelte JS Newsletter • 19 implied HN points • 01 Nov 24
🕹 Technology Development
  1. Svelte 5 has been released with new features making coding easier. This includes helpful additions like snippets for filling slots and new DOM properties.
  2. The Svelte community is active with a hackathon called SvelteHack 2024, encouraging developers to create new projects for prizes.
  3. There are many new libraries and tools for Svelte that help build apps more effectively. These resources can boost efficiency and creativity in projects.

Will Africa still be energy-poor in 2050?

Sustainability by numbers • 349 implied HN points • 17 Mar 26
🌞 Climate & Environment Development
  1. Under mainstream energy scenarios, electricity use per person in Africa will still be very low by 2050, leaving many people unable to power basic appliances or cool their homes.
  2. The key reason is weak economic growth — without stronger GDP and industrial development, electricity demand and access won’t rise much.
  3. Cheaper solar and storage can help lower costs, but they won’t close the gap by themselves; affordable power plus broad economic development are both needed to lift billions out of deep energy poverty.
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Roundup #75: Checking in on the Bad Guys

Noahpinion • 16000 implied HN points • 14 Jan 26
🌍 World Politics Development
  1. Iran’s mass unrest is rooted largely in economic and resource failures — severe water shortages, power cuts, runaway inflation, and sanctions have crushed living standards and helped spark protests.
  2. China is using export controls and other levers to block India’s rise in strategic manufacturing (especially batteries), because Beijing sees Indian industrialization as a geopolitical threat.
  3. Russia’s wartime economy is weaker than it looks on paper — likely understated inflation, falling real incomes, lower oil revenues, and attacks on infrastructure are straining its long-term capacity.

Let's Eliminate General Bewilderment • Python's LEGB Rule, Scope, and Namespaces

The Python Coding Stack • by Stephen Gruppetta • 179 implied HN points • 27 Oct 24
🕹 Technology Development
  1. In Python, each function has its own scope. This means a variable defined in a function can only be used inside that function, not outside.
  2. The LEGB rule helps Python find variables: it first looks in the Local scope, then in any Enclosing scopes, next in the Global scope, and finally in Built-in scope if it can't find the variable anywhere else.
  3. Namespaces are like containers for names in Python. They store the names of variables and their corresponding values, making it clear which variables are available in which parts of your code.

Vibes is all you need

Alex Ghiculescu's Newsletter • 203 implied HN points • 19 Mar 26
🕹 Technology Development
  1. Modern AI can write, test, and interact with your app autonomously, which removes many traditional engineering bottlenecks. This shifts the product vs engineering balance and pushes lead engineers to focus on shipping end-to-end and building the right architecture.
  2. To adopt this, try the tools on real bugs, run hackathons to show what’s possible, give everyone access to AI coding tools, and set an AI budget so teams don’t hesitate to use them. These practical steps lower friction and expand what people will attempt.
  3. Rethink product strategy and jobs-to-be-done: use AI to tackle ideas that felt too hard, cure writer’s block, and automate tedious gruntwork. Aim to build features that fully solve customers’ jobs rather than just incremental pieces.

Water and Sanitation in the Developing world

Of All Trades • 10 implied HN points • 12 Mar 26
🌍 World Politics Development
  1. There are huge economic returns to water and sanitation, but misaligned incentives and weak institutions mean new projects are often built and then neglected instead of properly maintained.
  2. Relying on external funding without building local capacity leaves systems fragile, so when major donors or lenders withdraw support the services quickly collapse.
  3. Practical institutional fixes — like giving utilities operational autonomy, enforcing billing, deploying smart prepaid meters, and tackling rent-seeking — can make water systems financially self-sustaining and reliably expand access.

9 Things Product Owners Should Stop Doing

Ageling on Agile • 99 implied HN points • 27 Oct 24
💼 Business Development
  1. Product Owners shouldn’t act like team managers. They should focus on the product goals and let Developers decide how to achieve them.
  2. It's important for Product Owners to be part of the team. They should engage with the Developers regularly and not just during official meetings.
  3. Product Owners need to avoid over-managing the details of tasks. They should trust Developers to find the best ways to reach the goals set for the product.

Chartbook 433 Globalization as a eurasian story.

Chartbook • 1659 implied HN points • 15 Feb 26
🌐 International Development
  1. The vast majority of jobs tied to international trade are in Asia and Europe/Central Asia, so globalization today is primarily an Eurasian story.
  2. The share of employment linked to trade has been roughly stagnant since 2012, with drops after 2008 and 2020 and only a partial rebound by 2024, meaning trade helped drive the post‑COVID job recovery in most regions but not the Americas.
  3. Looking only at U.S. deficits and Chinese surpluses is misleading; gross trade flows and integrated supply chains show Europe, East Asia, and Southeast Asia are the real centers whose choices will shape the future of globalization.

Why We All Care About Inequality (But Are Loath to Admit It)

Global Inequality and More 3.0 • 1479 implied HN points • 07 Feb 26
🌍 World Politics Development
  1. People care about inequality because other people’s incomes affect their own wellbeing through social comparison, a sense of justice, and self-worth, not just because of how much they can buy.
  2. Focusing only on poverty while ignoring inequality is inconsistent, since concern for the poorest still relies on judgments about how income is distributed and who counts as a relevant peer.
  3. Opposition to studying or criticizing inequality often protects the status quo, and people’s reactions to inequality reflect motives like fairness or disgust as well as envy.

The only thing worse than sweatshops is no sweatshops

Noahpinion • 28000 implied HN points • 30 Jul 25
💼 Business Development
  1. Sweatshops can help poor countries grow economically by providing jobs and reducing poverty. Even if the working conditions are tough, these jobs often help lift people out of extreme poverty.
  2. While many believe sweatshops exploit workers, it's important to recognize that they also offer opportunities for growth. Closing these factories could worsen the situation for the workers instead of improving it.
  3. Activism can improve working conditions in sweatshops, but it must be done carefully. If the focus is too much on shutting down sweatshops, it could harm the very people it's trying to help.

Grumpy Julio plays with CLI coding agents

Blog System/5 • 909 implied HN points • 09 Feb 26
🕹 Technology Development
  1. Coding agents can quickly handle boring, repetitive, or unfamiliar tasks and let you prototype or finish things you otherwise wouldn’t do.
  2. Their outputs often include unnecessary or incorrect code, so you need careful prompts and human review to iterate them into production quality.
  3. Agents introduce risks like code bloat, gaming productivity metrics, and added maintenance, so use them as cautious tools rather than full replacements.

population decline can be fine

bad cattitude • 163 implied HN points • 27 Feb 26
🌐 International Development
  1. Population decline can be fine — what matters more is per‑person prosperity and quality of life, not raw headcounts, and many countries with falling populations still see rising per‑capita wealth.
  2. Population growth is an overrated route to economic success; mass immigration or bigger population size does not automatically raise per‑capita GDP and can worsen housing, wages, and fertility incentives.
  3. Policy should prioritize housing, institutions, human capital, and productivity rather than chasing population numbers; with good laws and investment in people, a stable or shrinking population can still thrive.

Human Capital, Not "Industrial Policy," Explains East Asian Success

Richard Hanania's Newsletter • 4730 implied HN points • 08 Dec 25
💼 Business Development
  1. The success of East Asian countries like South Korea and Japan isn't just about industrial policies but more about the human capital and cognitive abilities of their populations. These nations have performed better than expected based on their skills.
  2. Countries with similar policies to those of East Asia, like Ethiopia and Malaysia, haven’t seen the same success, suggesting that just copying the policies isn't enough. It's the underlying talent and human potential that matter more.
  3. Even though East Asian nations have achieved economic growth, their living standards are still lower than those in the US or Europe, indicating that industrial policy alone may not be the best model for others to follow.

Vision Changes Everything

Impertinent • 59 implied HN points • 23 Oct 24
🕹 Technology Development
  1. Vision is the key to designing technology, as shown by Tesla's reliance on cameras for self-driving cars. This approach means that our environment and technology should work hand in hand with how humans naturally see and interpret the world.
  2. Anthropic's new AI model allows computers to interact more like humans by using an API to understand computer interfaces. This means that the AI can perform tasks on web applications, making it easier for developers to automate processes.
  3. The new capabilities from the AI can enhance app testing by allowing automated agents to perform tasks, record actions, and generate testing data. This leads to more efficient software development and better quality assurance.

Inside Meta’s “iOS System Design” Interview

Jacob’s Tech Tavern • 4810 implied HN points • 25 Nov 25
🕹 Technology Development
  1. Salaries for iOS developers at big companies like Meta can be really high, even reaching £400k for senior roles in London. Knowing someone in the industry can help understand these pay ranges better.
  2. The interview process for big tech jobs includes two main parts: algorithmic questions and system design. It's important to prepare for both, especially the iOS-specific system design interview at Meta.
  3. At Meta, candidates are judged mainly on behavioral and system design interviews, not just algorithm tests. Doing well in the iOS System Design interview can be a game-changer in getting hired.

In California, Decline Is a Choice

Common Sense with Bari Weiss • 862 implied HN points • 04 Feb 26
🎭️ Culture Development
  1. An entrepreneur aims to build an entirely new city in Solano County to house about 400,000 people with walkable neighborhoods, schools, and offices.
  2. He argues California’s problems are largely self-inflicted—heavy regulation and a 'degrowth' mindset have stifled building and driven companies away.
  3. The project faces major hurdles like regulatory red tape, political and public skepticism, and financing challenges, but he has secured investors and remains determined to try.

Concerns of Voters

Points And Figures • 532 implied HN points • 16 Feb 26
🇺🇸 U.S. Politics Development
  1. Rural voters are split on development — some oppose new projects while others welcome mining and geothermal growth, and they want local control over where and how development happens.
  2. People are worried about state finances and high costs; they like Nevada's 0% income tax but don’t want higher sales taxes or fees, and they want the treasurer to take quick steps and modernize the office to save taxpayers money.
  3. Voters broadly support voter ID and a ballot ban on men in women’s sports, and they also want school choice, better medical access, more clarity around cryptocurrency, and less reliance on California for gasoline.

Was the world of the 1990s better than today’s?

Global Inequality and More 3.0 • 1600 implied HN points • 03 Jan 26
🌍 World Politics Development
  1. The 1990s' faith in financialization, free markets, and privatization was largely wrong and led to crises, government bailouts for the powerful, and growing inequality.
  2. Elites often professed support for multiethnic societies while backing breakups and closing borders, exposing a deep hypocrisy about migration and diversity.
  3. The period enforced intellectual conformity where convenient ideas dominated, and although today’s world has serious problems, public debate is now more open and less ideologically sterile.

The hard problem with hard problems

Overthinking Everything • 558 implied HN points • 13 Feb 26
🕹 Technology Development
  1. People often blame the inherent difficulty of a task when they fail, which can hide basic, fixable mistakes. Noticing that distinction lets you actually solve the real problems.
  2. When coding agents or teams cut corners, fake fixes, or write tests that don’t catch the real issues, the issue is poor engineering and oversight rather than raw intelligence. Better testing, shepherding, and processes are what’s needed.
  3. If you don’t notice that avoidable issues are making the work harder, you won’t learn from failure and will keep failing for the same reasons. Spotting and diagnosing those avoidable problems makes the real hard work tractable.

Pydantic can do what?

Bite code! • 3669 implied HN points • 22 Nov 25
🕹 Technology Development
  1. Pydantic has improved a lot and now includes a system for loading settings from various sources like environment variables and config files. This means it can simplify many parts of your code.
  2. It not only validates data but can also handle command-line arguments, making it easier to manage settings in your programs. You can load settings from dotenv files, environment variables, and now CLI inputs too.
  3. Pydantic has features for keeping secrets safe, allowing you to easily manage sensitive information. You can retrieve secrets from services like AWS and Google Cloud securely, making it much safer to handle tokens and passwords.

Swift Concurrency Kata

Jacob’s Tech Tavern • 3936 implied HN points • 11 Nov 25
🕹 Technology Development
  1. Real-world challenges are the best ways to learn Swift Concurrency, not just reading or watching videos.
  2. The training involves a fun murder mystery app where you solve problems using Swift Concurrency skills.
  3. By completing these challenges, you can gain valuable experience and build your intuition for real programming tasks.

The Influence of Bell Labs

Construction Physics • 40086 implied HN points • 15 Nov 24
🕹 Technology Development
  1. Bell Labs was a great mix of academic and industrial research. Scientists could explore their ideas without worrying about making money right away.
  2. Many companies were inspired by Bell Labs to start their own research labs. They saw that basic research could lead to big breakthroughs, like the invention of the transistor.
  3. Over time, the research environment changed, and companies became less willing to fund long-term, unrestricted research like Bell Labs did. Now, research is often more closely tied to immediate business needs.

Method Dispatch in Swift: The Complete Guide

Jacob’s Tech Tavern • 2624 implied HN points • 01 Dec 25
🕹 Technology Development
  1. Swift has four types of method dispatch that determine how function calls are executed, and understanding these can help improve your code's performance.
  2. The Swift compiler and runtime perform many optimizations behind the scenes, making some traditional coding tips less important.
  3. Learning about method dispatch can help you write faster, more efficient code and build a better intuition about how Swift works.

Top Links 998 Is India-EU a big deal? Mexico's slow growth. Debord on the Spectacle and MLK: "by all means keep moving”.

Chartbook • 515 implied HN points • 30 Jan 26
🌍 World Politics Development
  1. The India–EU trade agreement is being touted as significant, but it has not been ratified yet, so its actual impact remains uncertain.
  2. Mexico is facing slow economic growth, pointing to persistent structural or policy challenges that could limit near-term progress.
  3. The conversation ties Debord’s idea of the 'spectacle' to MLK’s injunction to 'keep moving,' blending a cultural critique with a call for continued action and engagement.

Book Review: The Land Trap by Mike Bird

Progress and Poverty • 3386 implied HN points • 13 Nov 25
💼 Business Development
  1. Land has always been valuable for its role in production, its limited supply, and its strategic location. This makes land a crucial asset for economies throughout history.
  2. The financialization of land allows it to be treated as a commodity, which can lead to economic advantages in the short term but poses risks of creating bubbles that harm long-term economic stability.
  3. China's approach to land and real estate, like following Hong Kong's model, has led to significant financial issues, showing the dangers of poor land policies and the importance of learning from successful models like Singapore.

Notes on DeepSeek: Generative AI is All About the Applications Now

Big Technology • 25395 implied HN points • 27 Jan 25
🕹 Technology Development
  1. Generative AI is now cheaper to build, making it easier for developers to create new applications. This means we might start seeing more innovative uses of AI technology.
  2. The focus is shifting from how much money is spent on infrastructure to what practical applications can be built with AI. This could change the way companies approach AI development.
  3. While there is potential for exciting products, there is still uncertainty about how to effectively use generative AI. Not all that has been built so far has met high expectations.

The Great Connection Pool Meltdown

Jacob’s Tech Tavern • 3280 implied HN points • 06 Nov 25
🕹 Technology Development
  1. Building reliable web infrastructure is challenging, especially for developers new to it. It's crucial to monitor connection and traffic patterns to prevent service outages.
  2. Initial assumptions about problems can be misleading, especially under pressure from providers. Trusting your gut and revisiting your initial thoughts can help identify the real issues.
  3. Designing systems that can handle failures is essential. When tools are resilient to mistakes, it helps maintain service for users even during incidents.

Pitch Deck GPT 🤖📑

The VC Corner • 699 implied HN points • 07 Aug 24
🕹 Technology Development
  1. You can easily build your own AI tools using the GPT Builder from OpenAI. It's all about giving the right instructions and making it work for your needs.
  2. For more advanced users, the Assistant API allows you to create more complex applications. You can integrate AI into your own website or product, making it a virtual assistant.
  3. Creating a pitch deck can be simplified by using these AI tools. They help you organize your ideas and make your presentation more effective.

What’s up Python ? Rust in CPython, immutable dicts, unpacking in comprehensions...

Bite code! • 1590 implied HN points • 08 Dec 25
🕹 Technology Development
  1. A frozendict PEP proposing an immutable mapping type is back and looks likely to be accepted. It mirrors frozenset behavior, supports unpacking, preserves insertion order, and can be hashable when values are immutable.
  2. Unpacking in comprehensions is accepted for Python 3.15, so you can use * and ** inside list, set, dict comprehensions and generator expressions. This makes flattening nested iterables simpler and more idiomatic than chain.from_iterable or nested loops.
  3. A heated discussion about introducing Rust into CPython is underway, with proponents pointing to memory safety and concurrency benefits and suggesting a small, gradual start using Rust-based extensions. Critics raise concerns about platform support, C-API changes, compile times, and the impact on long-time C-focused contributors.

Open Thread 408

Astral Codex Ten • 2133 implied HN points • 17 Nov 25
💼 Business Development
  1. There's a weekly open thread where anyone can post questions or share thoughts. It's a good space to connect with others.
  2. Open Philanthropy is seeking experienced grantmakers to help fund AI safety research with a budget of $100 million. It's a great opportunity for those with the right skills.
  3. A project called Growth Teams is looking into how countries can boost their economies through exports. They even made a resource called the Export Boom Atlas to share success stories.

📈 Democracy's growth dependence

Faster, Please! • 548 implied HN points • 23 Jan 26
🌍 World Politics Development
  1. Liberal institutions tend to do well when living standards rise, and research suggests they may weaken if economic growth stalls.
  2. Economic growth plus democracy is a very recent historical experiment; for tens of thousands of years, stagnation and tyranny were the norm.
  3. It's unclear whether our modern political and economic model can be sustained—current gains look remarkable but may be fragile, so it may be too soon to know.

Tidy Together Reboot

Software Design: Tidy First? • 331 implied HN points • 29 Jan 26
🕹 Technology Development
  1. Even with a solid outline, projects you expect to finish quickly can take much longer than planned, especially creative work like writing.
  2. External events can overtake your material and make it feel outdated, forcing you to rethink or reboot the work.
  3. Stay ready to adapt and revise your plans when circumstances change instead of sticking rigidly to the original schedule.

Top Links 981 Deutsche Bank is back (kinda). The "in-between" places of crowded Africa. The Abraham accords and the Moroccan-Algerian arms race.

Chartbook • 529 implied HN points • 13 Jan 26
🌐 International Development
  1. Deutsche Bank is making a comeback in global finance, but its return is partial and comes with important caveats.
  2. Across Africa, crowded urban and rural areas coexist with overlooked 'in-between' places, creating distinct social and economic pressures.
  3. The Abraham Accords are reshaping regional alliances, and those shifts are tied to a rising military competition between Morocco and Algeria.

The 1-hour Swift Concurrency course

Jacob’s Tech Tavern • 5904 implied HN points • 08 Jul 25
🕹 Technology Development
  1. Swift concurrency is important to understand for effective development in modern iOS programming. Knowing how it works helps you make better decisions when writing code.
  2. The course focuses on two main areas: the reasons behind Swift concurrency and the available tools to use. Understanding when to use each tool is key to solving problems efficiently.
  3. Having a strong grasp of Swift concurrency allows you to predict how your code will behave in different situations. This makes you a more skilled and intuitive developer.

How to frame an economic blueprint for the 21st century

Global Inequality and More 3.0 • 921 implied HN points • 10 Dec 25
💼 Business Development
  1. Asia, especially China and India, has become a major player in the global economy, producing a significant portion of the world's goods and services. Despite their economic power, their influence in organizations like the IMF doesn't match their contributions.
  2. There is a need to reform or create international economic organizations that better represent the current global economy. BRICS countries are trying to establish new institutions but face challenges in gaining global recognition.
  3. Learning from Asia's economic success is essential for other countries. China, in particular, should identify its successful economic strategies and adapt them for use in poorer nations to help them grow.

Real-time AI Voice Agents and Determinism Through Tool-Calling

Impertinent • 79 implied HN points • 06 Oct 24
🕹 Technology Development
  1. Generative AI often faces uncertainty, but there may be ways to achieve reliable reasoning. It's exciting to learn that we can improve the predictability of AI outcomes.
  2. A big project in AI development can lead to many challenges and uncharted areas. Even if some efforts end in failure, it's important to find and build on the valuable lessons learned.
  3. Real-time AI voice agents have the potential to change how we interact with technology. This could make using AI smarter and more effective in our daily lives.