<p>@Ninja of War
</p><p>My point number 1 is critical, all I'm saying is that the sharingan provides the reflex boost/perception boost so that the user of chidori doesn't suffer from tunnel vision due to the speed boost. Speed boosts cause tunnel vision unless they are accompanied by techniques that boost the nervous system. Most techniques do that, but kakashi screwed up in his technique design, which is why Minato told him to throw it out the window, it was incomplete.
</p><p>Look, I'll try to keep my statements more clean, because at least you aren't using strawman arguments.
</p><p>What does guy having attacks that aren't in a straight line have to do with my point exactly? kakashi has also been seen changing his direction while running with it. The issue is seeing the counter attack, nothing about the direction change.
</p><p>There is a difference between speed and reflexes. The 8 gates boost speed and power yet there is no tunnel vision, which means the gates has a corresponding adaption for the user's nervous system.
</p><p>So let me get this straight, kakashi literally got stabbed by pain's rod at point blank range and yet he immediately used raikiri with intent to kill, and are you implying that the raikiri cannot cut through pain without a running start? The technique is made of raition chakra, meaning it already has penetrative and cutting abilities, and raiton is often compared to fuuton in these qualities. Your argument seems to imply that speed is needed for raikiri to achieve something that it's already good at, cutting through things. I also already stated that more momentum =more force, and sasuke needed more force in general to get through a hard defense, but that doesn't suddenly mean that the technique doesn't give a speed boost. As I said, kakashi and sasuke have used the technique in other contexts and yet there is still dangerous tunnel vision associated with the technique when they start running.
Kakashi clearly has stated his technique's speed can finish his opponents in an instant, he literally did so to 17 out of 18 targets.he wasn't using the speed for penetrative power, the jutsu already had that, he was using the speed to minimize his enemi'es reaction time.
</p><p>My point about rasengan still stands. We see naruto and minato running in a straight line with the jutsu, and more speed = more momentum when they finally hit their opponent. You are missing the point. Minato and naruto are seen running at their TOP speed when using rasengan and yet they have suffered no tunnel vision. I have no reason to believe that they weren't running at their maximum velocity. when rasengan collides with the target, there is still concussive force before the technique begins grinding, and concussive force alone can kill people. running at 5 mph with a dense sphere in your hand and hitting an object will have less concussive force than running at 30 mph.
</p><p>Your argument literally implies that rock lee's running speed causes tunnel vision, which I have already shown to be not true. the sasuke you referenced was shown and stated to have the same speed as weightless rock lee. rock lee never suffered tunnel vision, yet when he witnessed sasuke's chidori he clearly stated that he wouldn't use the speed "like that" because the technique does not stimulate his nervous system. The proof is that rock lee in the 5th gate is faster than sasuke wielding chidori, and yet rock lee doesn't experience tunnel vision despite lacking a sharingan, and that was when rock lee ran in a straight line.
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