system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars: The Empire Strikes Back] When Vader told Luke on Cloud City that they could destroy the Emperor and bring order to the galaxy, was he being honest?

And did Sideous actually foresee it as Vader claimed? And if so, why would Sideous be ok with Luke destroying him?
gpt
Yep. Vader's plan was to find Luke, tell him everything he learned from Obi-Wan and Yoda is a lie and the dark side is the only way to destroy the Emperor, then the two of them head over to Imperial Center and kill the Emperor.

The Emperor had his own scheme. Palpatine needs a strong apprentice to fulfill his grand plan of total dominion over everything and ultimate power, he knows Vader is going behind his back, but he wants to Luke brought to him anyway, and he thinks he can pit Luke and Vader against each other, and see who is truly the strongest in the dark side. If Luke wins than he has a new apprentice with all of Anakin's potential and none of the injuries and other baggage, and if Vader succeeds than he has proven himself and the last remnants of his humanity die with his son.