SPOILERS
I mean cortana's demise on halo4. Is she really dead?. I know you guys have better understanding of the halo universe than me.
Do you tuhink she will ever comeback?
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I hope she stays dead. The ending was a well executed and sad scene, one of the better in the series. Brining Cortana back would cheapen it, especially because it is said repeatedly that Cortana is dead, having been on Didact's ship when it blew up.