I was on an interview and was asked about how to click on objects of a type such as buttons when they keep changing names. I used the .ChildItems explanation to say that you can find out all of the buttons and then click on them. That part was OK even though I didn't write it out completely here.
Next he asked about some other .child method. I don't remember what it was. Something to do with Child and Index perhaps. Like .childIndex or .child something. Does this sound familiar to anyone?