Tony Fadell created the iPod, co-created the iPhone, and founded Nest (which he sold to Google for $3.2 billion). He’s co-authored over 300 patents, was part of the legendary team at General Magic, and wrote one of the most important and inspiring books for builders, called Build.

In our in-depth conversation, we discuss: 1. The heated internal debates about whether the iPhone should have a physical keyboard 2. Why opinion-based decisions are essential for v1 products 3. Why marketing matters as much as the product itself, and how the iPod almost failed 4. Why voice will eventually become the primary interface with AI 5. Why cognitive surrender to AI is the biggest risk facing product builders today — Brought to you by: WorkOS—Make your app enterprise-ready, with SSO, SCIM, RBAC, and more: workos.com/lenny Vanta—Automate compliance, manage risk, and accelerate trust with AI: vanta.com/lenny — Episode transcript: lennysnewsletter.com/p/father-o… — Archive of all Lenny's Podcast transcripts: dropbox.com/scl/fo/yxi4s2w998p1… — Where to find Tony Fadell: • X: x.com/tfadell • LinkedIn: linkedin.com/in/tonyfadell • Website: buildc.com — Where to find Lenny: • Newsletter: • X: • LinkedIn: — In this episode, we cover: — References: — Production and marketing by . For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com. — Lenny may be an investor in the companies discussed.