Proof of Concept
David HoangProof of Concept is a digital publication about creativity and experimentation for designers, builders, and entrepreneurs.
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 304 | Founded | 6 years ago | Last Issue | 9 days ago |
| Active | |||||
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proofofconcept.pubLatest Issues
Escape from agentic loop
I’ve been using agents a lot this year, and it’s incredible how powerful they’ve become. It started last winter break when everyone was using Claude Code. All of the sudden, I’m using Claude Code, Codex, Gemini, Cursor, Replit, Rovo Dev, an...
Draftsmanship
Draftsmanship originates from the word draught, meaning “to draw or pull.” It’s an attribute defined as the art, skill, or technique of producing drawings, plans, or sketches, particularly emphasizing high-quality, precise, and accurate rep...
Design Systems are now Inference Systems
Whether it’s building them, leading teams that owned them, I’ve spent most my career inside a design system. As a designer, I was one systems designer who broke things in favor of evolution. My intention was not malicious rather to future p...
The shape of leadership
The leadership role has changed drastically in the past three years. We’ve moved from the blitz scaling era to the scale era of AI. Though managing towards outcomes is still the focus, the way we do it has changed. As organizations figure o...
The formlessness of AI agents
In The Avengers #54, a mysterious villain called the Crimson Cowl is orchestrating attacks against the team. It’s not until the last page that the cowl drops and we see what’s underneath: a robot. The next issue reveals him fully—Ultron-5,...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Proof of Concept.
| Subscribers | Engagement | 76 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
SEO Reach
Where Proof of Concept ranks on Google, and how much search traffic it brings in.
| Ranked Keywords | 517 | Monthly Search Traffic | Top Keywords |
|---|
Chart Rankings
How this newsletter ranks in the official Substack charts.
| #60 | |
| #82 |
Authors
The writers behind this newsletter.
Investing and building tools that revolutionize the internet.
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Frequently Asked Questions
How can I access the email archive for Proof of Concept?
You can find recent issues that have been published by Proof of Concept on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
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