Here's the one problem with written narratives - the human mind takes longer to read, understand, and repeat something than it does to see and say something. So, what happens is that with a complicated sequence you can get lost in a hurry as the caller gets behind you and your lane. I've seen this too many times from the judge's chair and it really sucks for the poor pilot!!.

Don't think it can happen to you?? Then you're a better pilot than a certain TOC pilot from a certain South American country who got lost in the last TOC and flew the last 8 figures of his sequence in the wrong direction. His caller, and a very experienced and well practiced one at that, could not keep up reading the written narrative and missed calling an exit direction. 8 zeros are hard to come back from!!!