Bare with me OP...
RyanSoup wrote...
We should all know by now what Indoctrination Theory is, but for those of you who don't yet, the theory is that at the end of Priority: Earth, after Shepard is hit by a reaper's laser, Sheperd becomes indoctrinated and the whole ending is just a hallucination.
Already we have some slight misunderstandings. It's not that Shepard
becomes indoctrinated. That seed is planted at the beginning of the game, they very first scene infact. What many believe is that after he is knocked unconscious by Harbinger's beam, he is forced into a battle in his mind, to retain his sanity and beliefs from Reaper influence.
Here's the problem with that: we need to look at the amount of time that Shepard's actually spent around reapers. It really isn't much compared to Saren or The Illusive Man. Saren, for example, traversed the galaxy inside of Sovreign.
Although it's not exactly clear what point Saren became indoctrinated, he was aware of something
greater before ever finding Sovereign. Though Sovereign is most probably the root cause for his Indoctrination.
The Illusive Man had the human reaper larva's heart/brain in the center of his main base for at least a few months. In contrast, Shepard often only spends a few hours near a reaper at any given time.
TIM was indoctrinated well before he had the Reaper's Larva inside his base. Someone probably already cleared that up though. While Shepard on the other hand, may not have spent as much time around Reaper tech as Saren, but he did spend more than TIM.
Now, despite Sovreign's proximity on Vermire in ME1, Vigil later says that he, "does not detect the taint of indoctrination" on Shepard.
That's in ME1... lolwuh? But regardless it is somewhat believed that the Prothean Vi's can only sense Indoctrination if the subject has been implanted with such tech. Saren in ME1 & Kai Lang in ME3.
So, with that established, the question now is "how would Shepard have become indoctrinated that much in such a short amount of time, while still retaining much of his sanity?"
The most arguable thing you have said so far. People believe that Shepard's contact with Object Rho may have rooted the Indoctrination. That's 6 months previous to ME3, a decent amount of time. Again, also note what i'm talking about at the beginning, it's not that Shepard is indoctrinated. It's that Shepard is starting to see and feel unusual stimuli that is changing/shapping his beliefs of what he thinks is right (Reaper influence), when he's knocked out at the end, that's the reapers trying to fast-track their influence (indoctrination) while he's unconscious.
While I concede that both Saren and The Illusive man had extensive implantation done, this only occurred after the indoctrination had begun working.
Don't see how implants relate...
Also worth noting was Matriarch Benezia's ability to retain some control after becoming severely fatigued. I'd love to hear what others think, however.
Matriach Benezia was a thousand year old Asari, arguably stronger willed than Shepard. This is believable.