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Given the following post, respond as if you're commenting on Reddit:
human
[Revenge of the Sith] In the second half, Anakin quickly transitioned to the Dark Side and still served the Emperor despite knowing about Padme's death which was the reason why he wanted to turn to the Dark Side in the first place. How come he was so corrupted by the Dark Side so suddenly?

 

In the first half of the film, we see Anakin expressing confusion and doubt and noticing how Palpatine is slowly creeping into Anakin's mind and convincing him that the Jedi are corrupt and only he can save Padme.

Then the scene with Windu occurs where Anakin makes a decision between stopping Windu and actually save Padme and give Palpatine a fair trial, or not. We see him expressing shock when he killed Windu and all of a sudden, he is instantly loyal to Palpatine as a whole.

He openly kills the younglings and the other Separatists and even actually was close to killing Padme out of jealousy.

We know that Anakin always had strong emotions and came across as arrogant or sometimes power-hungry and angry in extreme instances. And despite that the Jedi shuns emotions and attachments, we see Obi-Wan trying to teach Anakin on how to get in touch with his feelings and use them wisely and we slowly see Anakin maturing through Obi-Wan's teachings.

So there is a huge and sudden constrast here and it happened suddenly and Anakin was convinced of his deeds. So does this mean that being corrupted by the Dark Side literally means that he was brainwashed like with some sort of space magic; or was he corrupted symbolically and metaphorically through his change of ideals and attitudes?

He later learns that Padme is dead so how come Anakin stayed loyal to the Emperor? What made him so convinced that building a tyrannical empire is the only way forward for the supposed "peace" that he was promised?
gpt
Anakin didn't transition quickly at all, he'd been falling to the Dark Side since he killed the Sand People in episode 2.

He was befriended by Palpatine who inflated his ego and arrogance and made it harder for him to work with the rest of the Order, on top of the Order's failure to address his concerns about his mother, resulting in his rage and massacre of the Sand People. He'd then go on to fight in the Clone Wars and carry out increasingly dubious commands for the Order while seeing firsthand how most of the Galaxy is ravaged by both the Republic and the Seperatists, before his own padawan walks away. Between the dismissal of his dreams about his mother and their bureaucracy during the war, by episode 3 Anakin's faith in the Order is dramatically eroded.

When he starts having dreams about Padme and Palpatine suggests that a Sith had the power to save lives, Anakin starts to feel there's no real difference between the Sith and Jedi, which only deepens his resentment and pushes him further.

He was already on the edge when he went to Palpatine's office, betraying Windu just pushed him over that edge then kids and surrendered foes only pushed him further.

By the end of the film Anakin's not only betrayed the only home he had, but he believed he killed the one person he was doing it for. Palpatine had been a father figure to him since he was a boy and was the only thing Anakin had left aside from his own self-loathing.