And just to throw my hat in the ring in favor of inside-out objects, I liked 'em when I first saw 'em, then I saw issues with serialization, destruction, threading, debugging, and so on. Unfortunately, I've been spoiled with a couple of years of working with really strong programmers. Then I move to a codebase with lots of crufty inherited code and programmers trying to work with this and I've completely changed my mind about inside-out objects. I strongly recommend them.