D3 Daily — Monday, July 27, 2026
Product sense gets a concrete definition, Anthropic's first PM reveals the bets that made Claude dominant, and the era of personal software begins. Here is what actually matters from today's feed.
Today’s Highlights
A concrete definition of “Product Sense”
Sidebar.io
The NN Group finally gives product sense a real definition: the ability to predict which product decisions will succeed based on patterns learned through experimentation. More importantly, they clarify when those patterns apply and when they don’t. This is the kind of framing that turns intuition into a teachable skill.
Anthropic’s first technical PM on token maxing, the jagged edge, and living in the future
Lenny’s Newsletter
Dianne Penn, Anthropic’s first PM, walks through the bets that made Claude dominant: the coding pivot, the eval-driven development loop, and what comes after coding is solved. The “jagged edge” framing is worth the read alone — it describes the uneven frontier where AI excels in some areas and fails in adjacent ones.
The era of personal software
Sidebar.ioBespoke tools designed for individual needs are transforming how we solve problems. This piece argues that the future of software is personal — not one-size-fits-all platforms, but tools that adapt to how you actually work. A quiet but important signal for anyone building products.
The consciousness mirage in AI design
UX Collective
We know AI is not human. We feel heard anyway. This piece explores what mind attribution does to your users and why it is now a UX design dial you need to understand. The framework here is practical — it helps you decide when anthropomorphism helps and when it harms.
Information architecture is the foundation artificial intelligence is starving for
UX Collective
AI systems are only as good as the structure of the information they consume. This article makes the case that information architecture — the discipline designers have been practicing for decades — is the missing foundation for effective AI. A strong reminder that good IA is not optional anymore.
Quick Hits
- Visualize striking 3D embellishment mockupsDREAMCOMPOSER® transforms designs into impressive 3D mockups.Sidebar.io
- Claude CookbookPractical guides and code examples for building with Claude.Sidebar.io
- The lost joy of music piracyWhat.CD, Oink, and the banalities of streaming....Sidebar.io
- 😸 Multimodal AI just got real...The Neuron AI
- 😸 NVIDIA 🤝 Microsoft all in on open-source...The Neuron AI
- AI can fake your portfolio, Lower latency, 5-to-9, Monochrome dataviz...UX Collective
- Your website is boring (but that might just set it free)...UX Collective
- The seams are where the system livesPartitioning a system into clean modules doesn’t remove complexity — it relocates it to the seams.UX Collective
- A concrete definition of “Product Sense”Your website is boring (but that might just set it free), Rauno's field notes, Writing by hand is good for your brain, CSS infinity use…Heydesigner
- Opera Neon reinvented browsing — Apple's next 👀AI browsers, Apple’s next UX overhaul, and digital fidget playgrounds?Today in Design
- Brand Designs Worth Talking AboutSee how Bentley, Big Cartel, and others are using design to reinvent, captivate, and inspire....Today in Design
- Play, Power, Purpose — The End of Playing It SafeDesign isn’t just visual anymore — it’s strategic, dynamic, and influential.Today in Design