In halo, you have an AI that lives in your power armor and her name is Cortana. Cortana can sense what you see, hear, etc. Cortana is seen to be super smart on multiple occasions and it is clear to the player. This doesn’t bother anyone. It bothers me now, though. If all of this is true, the following would happen.
Cortana senses the presence of enemies faster than you. she hears them and is able to identify how many based on their foot steps. She becomes annoyed with how sloppy you are, how many enemies you didn’t even notice and how slow you are to respond to them. She suggests that she take over your power suit. You find yourself in a situation you can’t handle and are forced to give her the reigns. She jumps into action dispatching enemies with speed and accuracy that you’ve never seen before. She shoots enemies as they step out from cover. Your movements are so fast that you vomit. She wipes out army after army as you passively watch, bewildered.
As you go through the game, you are on a mission to unravel the mysteries of halo and find a way to survive. Cortana assesses the battle space and concludes that you need to travel east. She notices several patterns of ancient runes and directs you to investigate a hidden passage. Her assessments seem incredible and bizarre but they consistently prove to be correct and eventually she ends up making every decision.
At the end of the day, if Halo were real then it would be a story about a man who passively sat inside a suit and watched an ai save the world. He probably would die in the suit at some point due to experiencing high g forces during some adventurous fight or maneuver and it would be a story about an ai who saved the world with a dead guy in the suit. It doesn’t make you feel warm and fuzzy like halo is supposed to, does it?