Which plugs are best for performance?

Hey, I don't get how that electrical power ever gets to the plug in the first place, since it has no ground and the rotor has long ago moved on to the next tower, there is no longer any push. Some things I understand as; it just works, but not exactly how, and I'm ok with that. Like why doesn't the spark jump right back to the rotor, when it figures out there is no ground on the other end?
See what I want to know is this; If you take the plug wire off the plug and lay it on the block, there is about an inch of boot between the end of the wire and the block,right?. Then, on a running engine,along comes the rotor, and the spark still jumps to the terminal in the cap, and flys out the other end, and jumps that humongous gap, so; why doesn't it take the path of least resistance and just jump to the next nearest tower and run up to a properly installed plug.I mean the towers are about half that distance apart,right? It's magic in my mind. Or why does it jump out of the wire at all? It's got a 1 inch jump to ground at the boot-end and a half inch or more in the cap; so why does it jump at all? Why doesn't it just stay trapped in the wire? More magic to me. See, if you make a circuit from a battery to a lightbulb,it lights up. But if you then disconnect both ends of one wire, is there still electricity trapped in the wire? No? Why not? There's electricity trapped in the battery..There's electricity trapped in a lot of stuff.
I wonder if there isn't a lot more to electricity than just what we have been taught,lol. I wonder about a lot of things.The whole of creation is a wonder.