Treeswing really got me thinking, I'll be attempting to cut ghost, angels, etc from the Oracle speech again. I don't know how it'll work in the context of the rest of the film, but I never liked it.
Edit: Bah, no matter what I trim of the conversation it doesn't stand on it's own if you don't know what was cut.
You need her talking about programs acting properly. You need her talking about programs to be deleted (because that tells of exiles and the source (where he must go)). If you cut what's in between out, you have to know what programs hacking other programs means or understand about programs that aren't acting properly (which except for Smith we haven't heard of/seen before).
It's a little too tightly integrated.
The best I've gotten so far:
O: The ones doing their job, doing what they were meant to do are invisible, you'd never know they were here.
The other ones, well...
O: Usually a program chooses exile when it faces deletion.
N: Why would a program be deleted?
...
It cuts out the bad ideas, but it seems like an abrupt transition and leave you to fill in some pretty big blanks. You'd need to understand she means exiled programs stand out as not belonging (i.e. not invisible). It seems a pretty big leap when a couple clang-y sentences can fill it in.
For now the ghost, etc. will stay unless someone can chime in with a good answer about this scene.