>Your first argument doesn't really work in my opinion since RHCP is only "halfway" in the wire. The statement is that it travels through the wire at basically lightspeed but that doesn't mean it retreats back into the wire at lightspeed. There is also the fact that it is basically lightspeed and not just lightspeed or exactly lightspeed and the speed of electricity that the Wikipedia page states is 50%-99% of the speed of light.
Yeah, it travels through the wire at light speed, guess what it's doing while it's retreating? Moving through the wire at lightspeed (hell it even visibly converts into the form it takes while moving through the wiring upon retreating, given we see exactly what he looks like while doing it when he's like wtf when Okuyasu got saved). Literally half of it is, at all times, in the wire, that part of it is moving at lightspeed, Koichi can perceive that, this really isnt difficult to understand dude. Unless you're trying to say that arbitrarily the part of him that's in the wire loses it's lightspeed properties when only like 30% of him is peeking out of the wire. (And thinking on it, the fact RHCP can move through the wires at that speed, control where it comes out, stop, turn around, react, drop and let go of his targets at specific locations, etc all while moving through wires at that speed is lightspeed reactions as well (technicaly it'd be FTL reactions given the proximity and time he'd have to do those things), should probably add that to the blog).
Based on at least one source, the velocity factor for a piece of copper wire is about 0.951. Therefore, the speed of electricity i a 12-gauge copper wire is 299,792,458 meters per second x 0.951 or 285,102,627 meters per second.
Given we see the exact type of wiring RHCP is traveling through, being copper based. yeah no, he's at minimum 0.950999998138712c, so over 95% of the speed of light. A maximum 5% difference isnt enough to detract from it being lightspeed reactions.
>n order for the tar bubble in your scenario to be capable of giving Koichi an effective warning sign it would need to move a significant amount before RHCP comes out at lightspeed. The electricity that trigerred the reaction from tar did presumably come from the electricity RHCP is made of after all. The speed the tar bubble would need for that would probably be in the range of relativistic and faster than light if I'm not wrong.
Yes, the tar itself was technically moving at rel-lightspeeds. Doesnt change the fact that Koichi picked up on the the shock from RHCP moving through the wire and nearing the exit, warned Josuke and could perceive it all, before RHCP could actually exit the wire, ergo throughout that entire exchange, RHCP was moving at lightspeed while trying to exit the wire but failed to actually exit before Koichi and Josuke reacted to it, with the distance RHCP needing to move only having to be it's body length (which isnt much given how short he is).