The Untold Story Behind the Facebook Like Button with Soleio

Early Facebook designer Soleio co-invented the Like Button, led design at Dropbox, and helped define what “product design” means today. In this episode of The Library of Minds, Soleio breaks down how Facebook built at lightning speed, why “code wins arguments” became their design mantra, and what AI-native design will look like in the next decade. What you’ll learn in this episode: The untold story of how the Like Button survived 2 years in “product purgatory” before launch - and how data beat intuition Why Facebook treated design as a capacity for speed, not just aesthetics How Dropbox balanced reliability and creativity to build “space-shuttle-quality” software Whether you’re a designer, founder, or product thinker, this conversation unpacks how design shapes innovation, culture, and identity. 🔗 Talk to Soleio’s Digital Mind: https://www.delphi.ai/soleio 📺 Watch more Library of Minds episodes: https://libraryofminds.com 🧠 Powered by Delphi — scale your thinking and stay yourself. https://www.delphi.ai Timestamps: (00:00) — Intro (01:00) — Who is Soleio (02:00) — Early web days: The origins of product design (04:37) — Inventing the ‘product designer’ role at Facebook (07:43) — Culture of speed, ownership, and building at Facebook (11:45) — Shipping fast: The story of Facebook’s Like button (13:54) — When to persist and when to quit: Loonshots, ‘false fails’, and user onboarding at Facebook (17:49) — Transitioning cultures: From Facebook’s speed to Dropbox’s trust (20:54) — Balancing speed with excellence: Lessons for AI-era startups (22:28) — Is speed or quality a stronger differentiator in today’s tech world? (24:35) — Can design be a moat in the age of AI? (27:35) — Rethinking UX in an AI-native world (29:08) — Why Soleio invested in Delphi: The “Oprahbot” idea and digital minds