“God is in the details,” reads one of Stephen Sondheim’s rules of writing. Sondheim was a lyricist, but it’s a rule I believe is broadly applicable. And I brought this up to Lila Tretikov, former Microsoft former deputy CTO, on a recent Zoom call—we were talking about the fine line between success and failure, and how small changes can make a big difference for a company, especially in AI. “I joke with my son all the time that I really wish he could download everything that I know now versus whe...