When I worked at Apple in the early 2000s, I used to wander over to IL2 for Core Graphics meetings and occasional chats with some of the brilliant engineers wor

When I worked at Apple in the early 2000s, I used to wander over to IL2 for Core Graphics meetings and occasional chats with some of the brilliant engineers working there. John Calhoun, a former Mac game developer, had total responsibility for the Preview app for a time. He was happy as a clam working on Preview and he seemed very proud of his work. As I recall, Preview back then was rock solid.