Originally posted by Arhael
Wrong. Windu invented Vaapad because he couldn't change his state of mind on first place. He couldn't become pure avatar of light like Yoda.And as I said you can't use Vaapad and draw on love for somebody simultaniously. You can't think about CoD3 and your girlfriend. You need to choose. If you think about CoD3, you might get pissed off at remembering how you couldn't complete a level. Likewise, if you think about girlfriend, you might remember how she wasn't letting you to play CoD3 and still get pissed off.
Could Kenobi predict that Maul will taunt him? No. He failed to maintain his focus and started losing.
Whatever Jedi think about during combat, it doesn't guaranty to change or improve their state of mind, it's unpredictable. Jacen experience deepest known Oneness with the Force and he knew that he would never be able to experience it again.
Your logic fails within confines of SW.
Because of flaw in the Old Order system Anain had to keep his relationship with Padme secret and, when he started seeing bad dreams with her, he couldn't even share his problem with anyone. And because of that Sidous could influence him. Sidious tried to convince him that Jedi betraid republic but Anakin wasn't convinced and reported to Order. In that moment, when Sidious was at Windu's mercy, Anakin was still in doubt. He needed guidance in that moment. And Windu instead of showing good example, tried to kill defenceless opponent.
Finding easy solution IS the path of the darkside. And this is perfect example why. If Windu didn't try to kill Sidious, Anakin wouldn't need to attack him and wouldn't turn to the darkside. And even if Sidious escaped or took over goverment later, there would still be thee powerful Jedi alive: Yoda, Windu and Anakin(not Vader) himself. Anakin would fulfil the prophecy without becoming Vader.
Luke's quote to Sidious Empire's End: "I won’t fall into your trap, Palpatine. Death is not the answer for you. You are my prisoner".
Luke had the same choice to strike down defenceless Jacen years later but that could turn his son to darkside, so he didn't do that despite Jacen being clear danger to republic and to everything Luke stood for.
Anakin was telling Windu not to kill Sidious, yet, Windu ignored him and failed to sence confusion of young Jedi because darkside was clouding his mind. Darkside lures to take easier choice. Windu took the easiest choice and you know the consequences.
Vapaad is a lightsaber style that is incredibly risky because one must actually enjoy the fight to fully utilize the form. Mace was in this state while ignoring Anakin's distraught mind. If he handled the situation like any other Jedi, Yoda, Obi-Wan, (not that obi wan would have put Sidious on the ground), They would have felt Anakin's conflicted state. Mace ignored the signs that Anakin was torn, and this was his undoing and ultimately the undoimg of the Republic he loved.