Qui-Gon was right about training Anakin. True, he did turn to the Dark Side. He also helped destroy the Jedi. But he also was the father of Luke and Leia, which wouldn't have happened if he wasn't trained. Some say that it's possible, but if you look at it reasonably, it's quite impossible. I think you would agree that if he wasn't Obi-Wan's apprentice he wouldn't have ever seen Padme again. So we can safely say that Luke/Leia wouldn't have been born if Anakin wasn't trained. Another thing is if Anakin wasn't trained he wouldn't have destroyed Palpitine. You see, if he never got close to Palpatine while he was young, he wouldn't have gotten to know him. Unless, of course, if the council refused to let Obi-Wan train him and Palpatine hunted him down, making him his apprentice right away! Now that would be trouble! Now, back to topic. Yoda, Qui-Gon, or anyone else knew what would happen in the future. Yoda felt danger, but that's it. Qui-Gon followed his heart. He actually listened to the Force. It spoke to him. He couldn't ignore it. Now, if you say Qui-Gon is wrong, you're basically saying the Force was wrong. If in doubt, look to the movies themselves! Qui-Gon said nothing happens by accident. Doesn't that say anything? He was probably more attuned to the Living Force (IMHO) than any other Jedi living at that time. You see, the Unifying Force gives clues and knowledge of the future, the past, ect. The Living Force focuses on the "here and now." Even though they're almost completely opposite, don't you think they're in harmony? The Force is the Force. Even though Yoda sensed danger, it doesn't mean that it's a bad thing, does it? Look at the WTC. Sure, it was bad, but in the end, it may cause terrorism to cease. Which is better in the long run? I would like to see Qui-Gon appear in episode III to clear his name. I really hope so. Obi-Wan will probably curse his name, and Qui-Gon'll just appear behind him and tell him it's alright. It's the Will of the Force, is it not? I hope this subject will be cleared up in the next SW movies, or I'm gonna scream!