Alan Kay：计算机革命还没有发生（OOPSLA 1997）

Alan Kay's 1997 OOPSLA keynote, preserved on YouTube after being lost from Google Video. He discusses what object orientation was meant to be, messaging, system design, and the state of computing practice.

Why HN likes it: Treated as a foundational talk, cited constantly for Kay's views on object-oriented programming and for rethinking software practice.

“I encourage all developers to watch that talk and do some thinking about the current state of our practice”