Yeah, I didn't like that either, so I just changed it
Now its max of 6 levels (instead of 3 max). We don't want to make it too much, because I've seen those 20 quote deep posts and they are UGLY and take up way too much room when trying to read.
It is the mark of an educated mind to be able to entertain a thought without accepting it.
The only true wisdom is in knowing you know nothing.