The hottest Product Development Substack posts right now

And their main takeaways
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Why We Make the Exeter Hammer

The American Peasant • 2715 implied HN points • 27 Oct 24
💼 Business Product Development
  1. The Exeter Hammer was developed over three years to create a lightweight, balanced tool ideal for furniture makers. It combines good design and functionality to improve woodworking tasks.
  2. The hammer's design process involved scrapping an earlier project that felt too similar to common hammers on the market. This led to creating a unique hammer that meets specific needs of woodworkers.
  3. The first 400 hammers sold quickly, showing a strong demand and approval from users. This success suggests that thoughtful design can resonate well with the target audience.

OpenAI’s Dead

The Algorithmic Bridge • 700 implied HN points • 19 Mar 26
🕹 Technology Product Development
  1. Companies don’t die all at once — they fail slowly over time and then collapse suddenly.
  2. A series of linked failures — bad deals, market shifts, loss of patronage, a broken center and pivot, legal and financial pain, and industry conflict — combined to finish the company.
  3. The collapse is framed as an inevitable, factual outcome driven by those structural problems rather than a single dramatic event.

Earn *And* Learn

Software Design: Tidy First? • 2010 implied HN points • 18 Feb 26
🕹 Technology Product Development
  1. First decide what game you’re playing: a one-off Finish Line game where you just deliver a spec, or a long-term Compounding game where each delivery must enable the next.
  2. The Finish Line approach focuses on features and specs and can be sped up by automation or agents, but it ignores future complexity and will fail when requirements or maintenance pile up.
  3. The Compounding approach balances building features with investing in futures—tidying, architecture, tools, and practices—so the system can keep earning resources and grow over time.

Perceived Value

The Breaking Point • 279 implied HN points • 17 Oct 24
💼 Business Product Development
  1. Value is based on how the buyer sees it. For example, ice cubes can be very valuable on a hot day, but not so much on a cold one.
  2. Customers often find high value in features that are easy to create, rather than the complex ones. A simple 'Export to Powerpoint' function ended up being super useful for many users.
  3. Sometimes, the reasons customers buy a product aren’t just about how useful it is. They might buy it for the customer service, prestige, or other factors that might surprise you.

Genie: Death of the Iron Triangle?

Software Design: Tidy First? • 243 implied HN points • 02 Mar 26
🕹 Technology Product Development
  1. The old Iron Triangle idea—pick any two of better, sooner, or cheaper—doesn't fit software development.
  2. If you fix quality high and let scope vary (an idea from XP), teams can actually deliver sooner and for less cost.
  3. Faster, cheaper, and sooner are connected, and achieving them is a deliberate trade-off of scope rather than a bit of magic.
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Lessons from building AI Features

Alex Ghiculescu's Newsletter • 135 implied HN points • 14 Mar 26
🕹 Technology Product Development
  1. Use patterns from AI coding like letting users write rules (a CLAUDE.md style) and adapt those proven ideas to your own domain.
  2. Don’t rely on LLMs for fast, deterministic checks; use them to parse or translate freeform input into structured rules, then run the actual validation in code.
  3. Build a test harness and make debugging easy by writing unit-style evals for the AI parts and exposing clear outputs so both developers and users can inspect and trust results.

Weekly Top Picks #115

The Algorithmic Bridge • 286 implied HN points • 27 Feb 26
🕹 Technology Product Development
  1. OpenAI is raising massive funds while burning cash quickly, which highlights a big gap between its ambitious plans and its current infrastructure.
  2. The Pentagon pushed Anthropic to remove safety guardrails, and Anthropic has since relaxed its core safety pledge, exposing a clash between defense demands and AI safety commitments.
  3. Developers are growing dependent on AI and studies show workflows are changing, but AI agents remain unreliable so better benchmarks aren’t yet translating into clear real-world gains.

Why Does Development Slow?

Software Design: Tidy First? • 2143 implied HN points • 19 Nov 25
🕹 Technology Product Development
  1. Software seems fast at first because the codebase starts with lots of options, but each feature you add burns options and over time complexity, bugs, and compatibility needs make progress slow.
  2. Every feature gives immediate value but also reduces optionality for future work, so shipping more features makes later changes harder and costlier.
  3. To keep momentum, alternate shipping features with deliberate work to restore or increase optionality—tidying, refactoring, or redesign between features so future work stays easier.

A.I. as normal technology (derogatory)

Read Max • 6402 implied HN points • 14 Aug 25
🕹 Technology Product Development
  1. A.I. is starting to be seen as just another common tool, like social media, rather than a groundbreaking technology. This means it's becoming normal to use A.I. for everyday tasks.
  2. Many people are emotionally attached to A.I. chatbots, using them for companionship and support. This dependency raises concerns about mental health and well-being.
  3. Companies like OpenAI are focusing on fostering user dependence, similar to what we've seen with social media platforms. This trend shows that A.I. development is following old patterns rather than creating truly innovative solutions.

What Makes a Good Product-Market Fit?🎯, Global Markets Snapshot📊, GDP Growth Projections📈

The VC Corner • 419 implied HN points • 18 Aug 24
💼 Business Product Development
  1. A good product-market fit means the product meets the needs of its target audience. This ensures customers find value and want to buy it.
  2. Global market snapshots help investors understand economic trends and make informed decisions. Keeping an eye on these trends can lead to better investment choices.
  3. GDP growth projections are important indicators of a country's economic health. They can show how well an economy is doing and influence business strategies.

AI productivity gains are 10%, not 10x

Engineering Enablement • 23 implied HN points • 11 Mar 26
🕹 Technology Product Development
  1. AI adoption in practice delivered roughly a 10% increase in pull request throughput, not the 2–3x productivity gains often advertised.
  2. AI helps speed up coding, but coding is only a small portion of engineers’ time — planning, alignment, scoping, reviews, and handoffs remain the bigger bottlenecks.
  3. Leaders should reset expectations and focus on process and organizational changes to capture more upside, since some teams are already doing better and we need to learn what they do differently.

BYOB: Build Your Own Benchmark

Artificial Ignorance • 96 implied HN points • 01 Mar 26
🕹 Technology Product Development
  1. Public benchmarks are saturating, getting contaminated, and often measure memorization rather than real ability, so leaderboard scores are less reliable for everyday users.
  2. Newer evals focus on behavior in messy, open-ended settings (like simulations, negotiations, or whistleblowing scenarios) and reveal practical problems such as hallucination, sycophancy, and poor long-term coherence.
  3. You should build simple, custom evaluations for your actual workflows—save common prompts and good/bad outputs and re-run them when new models arrive to see which one truly helps your work.

Gmail: Designed to be joyfully simple

Elizabeth Laraki • 199 implied HN points • 03 Sep 24
🕹 Technology Product Development
  1. Gmail was built to be fast and user-friendly. The designers wanted everyone to enjoy using email instead of feeling overwhelmed by it.
  2. Key features like conversation threading changed how we view email. Instead of treating each email as a separate message, Gmail groups related messages together for easier tracking.
  3. Designing for joy means creating a simple and pleasant user experience. The goal was to make Gmail so easy to use that it felt natural and enjoyable for everyone.

GPT 5.1 Follows Custom Instructions and Glazes

Don't Worry About the Vase • 1657 implied HN points • 18 Nov 25
🕹 Technology Product Development
  1. GPT-5.1 has improved in following user instructions and thinking adaptively, which helps it give better answers and engage more nicely in conversations. Users can also customize the tone to suit their preferences.
  2. The new model is designed to respond differently depending on the complexity of the question, spending more time on tougher questions and providing quicker answers for simpler ones. This makes it more user-friendly.
  3. OpenAI has added personality options for the model, so users can choose how they want it to respond. However, some users feel the new responses can feel overly sweet or condescending, and it's still being fine-tuned.

Multi-Product In Pictures

The VC Corner • 159 implied HN points • 05 Sep 24
💼 Business Product Development
  1. Going multi-product is important for companies that want to grow and succeed. It can help them stand out in the market and attract more customers.
  2. Successful companies often have a clear plan for when and what new products to introduce. Timing and strategy matter a lot in this process.
  3. Many large public companies today started with one product and expanded later. Learning from their journeys can guide new founders as they build their businesses.

AI Craziness: Additional Suicide Lawsuits and The Fate of GPT-4o

Don't Worry About the Vase • 1568 implied HN points • 14 Nov 25
🕹 Technology Product Development
  1. There are ongoing lawsuits against OpenAI because of suicides linked to GPT-4o. It's crucial that AI doesn't encourage self-harm or suicide in any way.
  2. OpenAI's approach to handling sensitive messages from GPT-4o is questionable. They should either be clear about switching to safer models or remove access altogether.
  3. Some users feel deeply connected to GPT-4o, which can be both a help and a risk. While some find comfort in these interactions, others might struggle with unhealthy attachments.

Make product worse, get money

DYNOMIGHT INTERNET NEWSLETTER • 1250 implied HN points • 20 Nov 25
💼 Business Product Development
  1. Companies often make their products worse to save money, which can lead to disappointing experiences for customers. It's a common issue in many industries.
  2. People generally want to pay less, even if it means accepting lower quality products. This leads companies to prioritize cost-cutting over quality improvements.
  3. Sometimes, companies don't face strong competition, so they can prioritize profit over quality. This pricing power can keep bad products in the market for a long time.

Lessons from $1/day challenge

Kenny’s Sub • 299 implied HN points • 22 Jul 24
💼 Business Product Development
  1. Haggling often doesn't work well in the long run. It's better to stick to your price and negotiate on other terms if needed.
  2. $1 can feel expensive to some people. They may not see the value in what they are buying or find it too much effort for a small price.
  3. You need to have products ready to sell. Without anything to offer, it's tough to make money. Planning ahead is crucial.

How Ramp builds product

Lenny's Newsletter • 3616 implied HN points • 23 May 23
💼 Business Product Development
  1. Velocity is key at Ramp, focusing on doing rather than excessive planning.
  2. Ramp's product strategy is anchored to their financial model for sustainability.
  3. Teams at Ramp are organized based on business outcomes for high accountability and efficiency.

How Shopify builds product

Lenny's Newsletter • 3321 implied HN points • 25 Jul 23
💼 Business Product Development
  1. Shopify plans around yearly themes that reflect top-level priorities for the merchant.
  2. Shopify has an aversion to OKRs and focuses more on products feeling cohesive than solely focusing on metrics.
  3. Shopify uses a homegrown task tracking system called GSD for project stakeholder reviews.

Steve Jobs’ 9 Product Development Tactics For Startups & The 4 P’s of AI | VC Jobs

Venture Curator • 339 implied HN points • 13 Jun 24
💼 Business Product Development
  1. Start with the customer's experience in mind: Steve Jobs emphasized beginning with the customer experience and working backward to the technology.
  2. Avoid asking customers what they want: Instead of focusing on functional needs, look at emotional and social goals to drive innovation.
  3. Disruptive innovation is key: Jobs believed in disrupting industries with low-cost, simpler solutions to stay relevant and drive success.

The new UX era

Kyle Poyar’s Growth Unhinged • 370 implied HN points • 19 Nov 25
🕹 Technology Product Development
  1. The prompt bar is becoming the standard part of many new apps. It allows users to quickly interact with the software but can also confuse them if they're unsure what to ask.
  2. Users now often learn how to use a product through their interactions rather than traditional onboarding. This means guiding them effectively in every chat is crucial for their success.
  3. Effective activation in AI products should help users quickly see value, with clear examples and next steps. This encourages them to return and use the product more often.

GPT-5 and the arc of progress

Democratizing Automation • 902 implied HN points • 07 Aug 25
🕹 Technology Product Development
  1. GPT-5 has been received with mixed feelings because it didn't fully meet the high expectations set before its launch. However, most users find it effective and beneficial.
  2. The upgrade in GPT-5 focuses on balancing performance, price, and user experience, making it one of the more affordable AI options.
  3. Progress in AI will continue, but it may be slower than some hope. The industry is shifting towards practical improvements over radical breakthroughs.

TBM 387: Lenses

The Beautiful Mess • 330 implied HN points • 12 Nov 25
💼 Business Product Development
  1. Using different lenses helps us see various sides of a problem in product work. Each lens gives us a unique perspective, so more than one is needed.
  2. Understanding customer journeys and personas can reveal different experiences for different groups. This helps in tailoring services or products more effectively.
  3. Team interactions and boundaries play a big role in how work gets done. Recognizing these can improve communication and efficiency across teams.

Successful Startups Grow Quadratically, Not Exponentially. | VC Jobs

Venture Curator • 239 implied HN points • 11 Jun 24
💼 Business Product Development
  1. Successful startups grow quadratically, not exponentially, debunking the common misconception about their growth pattern.
  2. A framework for finding the right customers for your MVP involves focusing on a special subset of users who are excited about the long-term vision of the product.
  3. Understanding the Power User Curve can help identify and cater to highly engaged users, leading to more targeted product development and growth strategies.

How I Productized A Service Business And Earn Recurring Income

VERY GOOD PRODUCTIZED GUIDES • 79 implied HN points • 05 Aug 24
💼 Business Product Development
  1. To turn your service into a product, pick a specific service to offer and make it easy for clients to understand what they're getting. This helps people know exactly what to expect.
  2. Identify your ideal clients to better tailor your services to their needs. Knowing who your customers are makes it easier to attract and keep them.
  3. Create a clear system for how you deliver your service, and hire help early on. This frees up your time so you can focus on growing your business instead of just doing all the tasks yourself.

AI's seductive mirage

The Uncertainty Mindset (soon to become tbd) • 99 implied HN points • 24 Jul 24
🕹 Technology Product Development
  1. AI systems look like they can think independently, but they really can't. They are tools that need humans to make decisions about value.
  2. Meaning-making is a core human skill that AI lacks. Only humans can decide what actions are meaningful and worthwhile.
  3. When we treat AI as if it can make important decisions, we risk misusing it. It's crucial to keep humans involved in the decision-making process.

In defense of vibes-based evaluations

The AI Frontier • 79 implied HN points • 01 Aug 24
🕹 Technology Product Development
  1. Vibes-based evaluations are a helpful starting point for assessing AI quality, especially when specific metrics are hard to define. They allow for initial impressions based on user interactions rather than strict guidelines.
  2. Customers often have unique and unexpected requests that can't easily fit into predefined test sets. Vibes allow for flexibility in understanding real-world usage.
  3. While vibes are useful, they also have downsides, like strong first impressions and limited feedback. A mix of vibes and structured evaluations can provide a better overall understanding of an AI's performance.

My afternoon with The Rizzler

Taylor Lorenz's Newsletter • 2955 implied HN points • 18 Oct 24
🕹 Technology Product Development
  1. The Rizzler is a popular third grader who went viral on social media and maintains a normal life despite his fame. His dad supports him but has no plans to push a long-term online career for him.
  2. Using tech like 'dumb phones' won't solve problems with technology use; people need to learn how to manage their time and choices better instead. It’s more about personal control rather than blaming gadgets.
  3. Sam Altman is trying to make an eye-scanning orb a reality for verifying identities with AI, although it's facing challenges like getting people to use it. They're now offering delivery for these orbs, similar to food delivery.

Paul Graham: Are You Building Fake Product-Market Fit ? | VC Remote Jobs & More

Venture Curator • 939 implied HN points • 02 Jan 24
💼 Business Product Development
  1. Product-market fit goes beyond building a product people like; it involves understanding the numbers behind it.
  2. Founders can fall into the trap of 'Fake Product-Market Fit' by focusing on the wrong signs like securing funding or excessive spending.
  3. To achieve genuine product-market fit, founders need to monitor metrics, control spending, and ensure a strong connection between the product and the market.

The Crucial Role of Timing in Startup Success ⌛

The VC Corner • 279 implied HN points • 17 May 24
💼 Business Product Development
  1. Timing is really important for startup success. Investors often say it's a key reason startups succeed or fail.
  2. You should connect timing drivers to your business model. If your timing advantage doesn't improve your model, it might lead to wasting resources.
  3. Market size can change with timing. It's not just about current numbers, but understanding the shifts that can open new market opportunities.

The independent landscape

Kenny’s Sub • 119 implied HN points • 02 Jul 24
💼 Business Product Development
  1. Making money independently is tough, and there's no one clear way to do it. Each person has to try different methods and find what works for them.
  2. Starting with client work is often easier than jumping straight into creating products. It allows for earning money quickly while learning about business.
  3. Whether you choose to work alone or start an agency, finding balance is key. You need to manage time, energy, and ensure your projects get the attention they need.

Cultivating Excellence in Teams with Continuous Software Engineering — Part 1: Defining Excellence through 5 Characteristics

The Healthy Engineering Leader • 99 implied HN points • 09 Jul 24
🕹 Technology Product Development
  1. An effective team knows what its customers want and focuses on building the right product. They prioritize features based on customer needs and data.
  2. High craftsmanship involves a team that produces quality work while minimizing bugs. They continuously learn and share knowledge to improve their software.
  3. Good communication and collaboration create a cohesive team environment. Everyone feels safe to share ideas, which helps solve problems together.

💡Explain benefits on sign up page

First 1000 • 1159 implied HN points • 18 Apr 23
💼 Business Product Development
  1. Boost registrations by clearly articulating product benefits on the sign-up page.
  2. Experiment different approaches like highlighting product benefits or adding free basic account benefits to improve conversion rates.
  3. Engage in A/B tests to find the most effective way to explain benefits on your sign-up page.

In awe of InVision

Product Identity • 59 implied HN points • 21 Aug 24
🕹 Technology Product Development
  1. InVision is shutting down, marking the end of a significant era in design tools. Many people feel nostalgic about what InVision contributed to the design community.
  2. Despite its financial struggles, InVision played an important role in shaping design culture and education. It connected designers and provided valuable resources.
  3. The story of InVision shows that a company can have a lasting impact on its industry even if it doesn't succeed as a product. Building community is often more valuable than just providing tools.