Is the footage seen in this trailer canon?More importantly Is the words that come out of cortana mouth canon? " I have defied gods and demons" " I know your past , your future" " I am your sheild , your sword" " This is the way the world ends" This either proves cortana was not made by Dr hasely or somethign merged with her at some point. How ever I DO NOT believe it was during her stay in halos core. My reason for this is protocal forces her to blindly jump in space but instead she took a location she found on a rock. She also never blew up IAC when halo was seconds to fire and it doesn't take a genious to know she can't just enter the ships core from high charity if the IAC crashed into HC. Also a wireless network is sorta out of the question as it would eb to easy for the covenant to control. Point is cortana is not who we thought ( or most of us thought). Also what do you all think about the end part? Looks to me as if earth it's self is a weapon.