I thought exactly the same as you. And what surprised me was that he already talked about "it's hard to track" (while talking about ads). The mindset was liter

I thought exactly the same as you. And what surprised me was that he already talked about "it's hard to track" (while talking about ads). The mindset was literally already there, it's like he knew already what, why and build it, except he didn't have maybe the tools he had today. Crazy.