Did you forget Luke's vision of Bespin? Did you forget that he sensed something "familiar" about Dagobah?
"Geore Lucas originally used the books as canon, ROTJ and Empire even refer to the books occasionally (Battle of Tanab, etc). They were canon originally, so they should have been canon today."
Lucas has always stated that the films are the highest canon, and supercede everything else. Any information in the books that isn't contradicted by the films is considered canon.
Two things to understand:
1) LFL recognizes several levels of canon, films being the highest.
2) Lucas doesn't really care about these rules a whole lot to begin with. He is more than welcome to pick and choose what he wants from EU to put in the films.
"Lucas should have built the prequels around the books and the original trilogy instead of tryibng to rape the original in favor of the prequels."
In this, I would agree with you.
"I haven't watched TPM lately, but doesn't Palp only order the invasion after being informed about the Jedi? Doesn't he say this move is unexpected, or something?"
Yes, but again, if the Jedi are there, why does he do something illegal? He obviously had the armies ready to go anyways. If anything, they just bumped up his plans.
"Could Palp have done all this without the Jedi involvement? Probably. But they made it alot easier, whether it be through actions of arrogance or being naive, whichever you prefer."
But Force use to that extent leads to the Dark Side. There's quite a few comments about that in the novels.
Quote
"Deep in his meditations, peering through the Dark Side, Master Yoda felt a sudden surge of anger, or outrage beyond control. The diminutive Master's eyes popped wide open at the overwhelming strength of that rage.
And then he heard a voice, a familiar voice, crying, "No, Anakin! Don't! No!"
It was Qui-gon. Yoda knew that it was Qui-gon. But Qui-gon was dead, had become one with the Force! One could not retain conciousness and sense of self in that state; one could not speak from beyond the grave.
But Yoda had heard the ghostly call, and in his deep meditative state, his thoughts focused precisely as they had ever been, the Jedi Master knew that he had not been mistaken. Anakin, too, had heard the voice of Qui-gon, imploring him to restrain himself, to deny the rage. He hadn't recognized it, though, for he wa too full of pain and anger." - AOTC novelization.
"To be a Jedi, Luke, you must confront and then go beyond the dark side-the side your father couldn't get past. Impatience is the easiest door-for you, like your father. Only, your father was seduced by what he found on the other side of the door, and you have held firm. You're no longer so reckless now, Luke. You are strong and patient. And you are ready for your final confrontation." - ROTJ novelization
"I expect alittle more foresight out of my Jedi, don't you?"
But foresight through the Force isn't perfect, even for Palpatine. The films make this clear. This doesn't even touch on the fact that the Jedi couldn't use the Force as well as they would have liked, because the Dark Side was clouding them. They'd lost their most crucial tool, and yet they are still supposed to do everything right? If the batteries in your flashlight were dying, who is to be blamed if you can't see where you are going, or make a bad decision about which direction to take?
Quote
The Emperor raised his head a degree, scanning all the possible futures. "Everything is proceeding as I have foreseen."
He, like Vader, had plans of his own-plans of spiritual violation, the manipulation of lives and destinies. He chuckled to himself, savoring the nearness of his conquest: the final seduction of the young Skywalker.
"He will come to me?" Vader asked skeptically. This was not what he felt. He felt drawn.
"Of his own free will," the Emperor assured him. It must be of his own free will, else all was lost. A spirit could not be coerced into corruption, it had to be seduced. It had to participate actively. It had to crave. Luke Skywalker knew these things, and still he circled the black fire, like a cat. Destinies could never be read with absolute certainty-but Skywalker would come, that was clear. "I have foreseen it. His compassion for you will be his undoing." Compassion had always been the weak belly of the Jedi, and forever would be. It was the ultimate vulnerability. The Emperor had none. "The boy will come to you, and you will then bring him before me." - ROTJ novelization
Sorry, but it's nowhere near as cut-and-dried as you make it out to be. The Sith deliberately turn people to fulfill their own will, sometimes through promises of power or goodness.