- last post: 01.01.0001 12:00 AM PDT
This is kinda of twisted but bear with me.
Since Cortana was locked up in High Charity with the Gravemind maybe she has learned a way to use the flood. When she says:
"I have defied gods and demons"
The covenant believed in the Gods (the forunners) and demons (not sure where the demons come in, maybe refering to the MC).
"I am your Sheild, I am your sowrd."
Since humanity (I persume) are defeated, Cortana can "use" the flood by sending them to Earth to take out the covenant (since they do not want their food to be destroyed and mankind doesn't want all life in the galaxy to be destoryed; they cortana may have convinced the Gravemind to fight with her).
"I know you, your past, your future"
Cortana is saying that she knows what the Master Chief is capable of (from past missions) and since she is a smart AI she is able to calculate the chances of winning (which may go either way/humans win or lose).
"This is the way the world ends"
If the ark is activated then all the life in the galaxy will die or If you recall, the humans have the NOVA Nuclear Warhead (that is able to destroy entire planets) and if worst comes to worst, use it to stop the Ark from activation.
But basically (this is an assumption) since Cortana made buddies with The Gravemind she was able to talk it into (or even commandl it) sending the flood to Earth (since it seems that humanity on Earth is nill) to eraticate the covenant before they activate the Ark.
But this is a crazy idea, no way Bungie will use it.
[Edited on 5/9/2006]