Board Thread:Naruto Discussions/@comment-26107879-20181004003653/@comment-4080775-20181005010712

I'm not picking sides, but the "speed of the technique" and the "speed of the user" are two different things. You can easily trust your arm forward much faster than you can move your body forward, but thrusting your arm forward doesn't increase the overall speed of your entire body.

And the Lightning Cutter page says Kakashi can flow the technique into a Kunai to enhance it's cutting power and throw the technique. It doesn't say anything about the Lightning Cutter increasing the kunai's speed.

On one hand, the technique causes tunnel vision. On the other hand, the lightning itself isn't channeled throughout the entire body, within their legs, or even into their nervous system to even enhance the user's speed. As far as I can tell, it shouldn't enhance the user's speed honestly, though this contradicts the tunnel vision. *Shrugs*

I never understood why it causes tunnel vision anyway outside of a "useless weakness" because such lightning being concentrated like that could easily cut or pierce the target regardless of speed, fast or slow. Anyway, it is what it is - very confusing. Oh, and the databook doesn't mention the techniques increasing the speed of the arm or increasing speed at all, but whatever.