In Response To: Some interesting questions and notes from the book (Skeletor)
This is a a *SPOILER* From the Book and Intro movie!
Doesn't seem odd that Cortana seems to lie to captin keyes in the intro movie. Doesn't she imply in the movie that they got to Halo after a random blind jump (following the cole protocol). But if you read the book, she did not do a random jump at all! She figured out the clue in the rocks that Master Chief found.
Also, not only is she lying about it, but think about it - She might have placed the PoA in danger by jumping to Halo. She tells Keyes that the Cov. might have followed the PoA and beat them to Halo because they are faster... Well, who said they didn't already figure out the clue themselves and were already there...