I'm still not quite sure I understand the way Aperture manages the library. I've been telling it to put all the pictures I import into a specific directory in a new project-named folder, but if I understand correctly I could have all the files in that single library container (why I would want that, I don't know). Add to that masters and stacks: Aren't all the images I upload masters? I understand that the concept of a stack is the master and all it's versions, but why then can I "autostack" things I upload?
Can someone explain this in an easy to understand manner?