I can. You can. I bet most can't, and even if they could, still wouldn't know the right place to break the cycle. If you break the cycle in the wrong place then things go bye-bye when you still need them.

I've had this very discussion on here. Hell, at a games company that developed AAA titles, I had to demonstrate to a non-junior programmer that C++ references can be null. To the majority of programmers, memory management is incomprehensible voodoo. And they're all making iPhone apps. o_O