You really have not acknowledge any of my points. You say that Luffy was not committed to the attack because he changed the direction of it, and not finished saying Ka. However it is not like he used anything else. Like with the example in basketball, Luffy was about to shoot, and saw a better play so he passed the ball. I have already stated that for skillful people are able to change their actions in the process of doing it.
Also Luffy did not use observation during the war consciously, so during his attack, he "felt" something, and that was shown as an image of his arms getting cut, he was in the process of attacking. He did not stop and use Observation Haki. Observation haki was activated during his attack as a self-defense mechanism.
@Hannibal:
Nope, I'm not implying Observation Haki is on the entire time. It's only reasonable it'd be used when it's required.
It kinda seems like it when you are questioning why all these characters are not using it, if they are able to use it, they should be using it. So if we agree that is something that must be consciously focused on to be used, why is it hard to grasp that they simply did not use it.
Are you claiming that Luffy was on the level of Sengoku and Mihawk, all who failed to land their attacks?
Not sure where in my post have I claimed that? Luffy was not on their level, but it does not mean he cannot react at all to what they do. In fact he was going to be overwhelmed by Mihawk had Vista not interrupted.
Also Sengoku did not fail to land his attack, he just got parried. With a technique that Luffy uses which is specialized in that. Luffy was affected by the attack and he even had to use gear third so that the attack had less of an impact.
The fact is if you look at every instance that Observation Haki has predicted anything, it's not when the character is attacking or committed to an attack, it's when they're not attacking.
Katakuri missed attacks, that's the point. He missed all his attacks in chapter 882, why?
But he also didn't. Had he never landed anything on Luffy you would have a point. But Katakuri did trap Luffy with Mochi in 882.
He said he was stressed out that no one had ever missed so many attacks, are you insinuating he wasn't trying?
Where are you coming up with these insinuations? Luffy is getting used to Katakuri's speed and tactics that is all. At first whenever he dodged, Katakuri would counter him and attack towards where he had dodged. After fighting for a while, Luffy will start grasping his opponents tactics and way of fighting. If Luffy could not stretch, he would not have been able to move his head out of the way.
He missed his shot on Sanji, why? Was he not trying? The so-called perfectionist?
As we saw this chapter, the perfectionist was a name given to him by his crewmates. It is just a fake image they have constructed around him. Sanji is also very adept at observation haki, Katakuri predicted that the priest's shot was going to be dodged, that is as far as his observation into the future went.
The point is Haki sees what an individual will do before they do.
Haki predicts the intention of the individual, I believe that one can hide their intentions and misguide their opponents.
If you watched a YouTube video, then you know what's going to happen in the 10th second, the 20th second, etc. How then can you explain missing something you already know before hand?
I do not think that the video is a good analogy but I'll go with it. I would not know what will happen in the video before I watch it entirely though. I would have to watch every second of it. I would know the length of the video, however this thinking that the future is fixed. If the video was live, then you would not know what will happen until it happens.
The person streaming could say: I am going to play this game, and 20 seconds later he goes, nah I'm just going to talk with you all. My point is, observation haki can predict someones intentions, but it is not infallible.