John Nack

Stewart Butterfield (@stewart) rarely does interviews. After 2 years of trying, I finally convinced him to come on. In this special conversation, Stewart shares the frameworks and mental models that most helped him build two of the most important products in tech history (@Flickr, and @SlackHQ—which he sold for $28B, and which powers how basically every company collaborates these days). We discuss: 🔸 "Utility curves" — his framework for prioritizing ideas 🔸 "The owner's delusion" — why restaurant websites suck 🔸 "Tilting your umbrella" — a hilarious Slack core value 🔸 "Hyper-realistic work-like activities" — my new favorite concept 🔸 "Don't make me think" — Stewart's foundational design philosophy 🔸 The story behind "We don't sell saddles here" Listen now 👇 • YouTube: youtu.be/kLe-zy5r0Mk • Spotify: open.spotify.com/episode/42JBWU… • Apple: podcasts.apple.com/us/podcast/sla… Thank you to our wonderful sponsors for supporting the podcast: 🏆 @WorkOS — Modern identity platform for B2B SaaS, free up to 1 million MAUs: workos.com/lenny 🏆 @getmetronome — Monetization infrastructure for modern software companies: metronome.com 🏆 @Lovable — Build apps by simply chatting with AI: lovable.com

For years I've been doing this manually for each logo project. Start with an Illustrator file with all my favourite fonts ready to be replaced with the brand name. Or taking a screenshot of the logomark and scrolling through google fonts with the screenshot placed next to the type... Now, @joshpuckett has saved me, and every other designer, hours on each project by creating a tool called Locale. Insane work

Introducing the new @stitchbygoogle, Google’s vibe design platform that transforms natural language into high-fidelity designs in one seamless flow. 🎨Create with a smarter design agent: Describe a new business concept or app vision and see it take shape on an AI-native canvas. ⚡️ Iterate quickly: Stitch screens together into interactive prototypes and manage your brand with a portable design system. 🎤 Collaborate with voice: Use hands-free voice interactions to update layouts and explore new variations in real-time. Try it now (Age 18+ only. Currently available in English and in countries where Gemini is supported.) → stitch.withgoogle.com

A breakthrough in real-time video generation. As a research preview developed with @NVIDIA and shared at @NVIDIAGTC this week, we trained a new real-time video model running on Vera Rubin. HD videos generate instantly, with time-to-first-frame under 100ms. Unlocking an entirely new creative paradigm and bolstering the foundations of our General World Model, GWM-1. Real-time generation opens a fundamentally different design space for video models and world simulation. We're investing in co-designing our models alongside advances in hardware to keep pushing this frontier.

Nano Banana->SVG results can be... unique. 😛 x.com/MuCai7/status/…

Several former Notre Dame football stars are behind a new condo development opening less than a half-mile from campus. Learn more about it here! >> wndu.com/2026/03/18/for…