What is a wire that has zero resistance?
What is a wire that is a perfect conductor?
What is a wire that is a superconductor?
What are the differences?
I think, the difference is in your working model, so inside your head and it depends on what you consider, what you know, and how you describe what you need to achieve your goal.
Are you a theoretical physicist? or an engineer? do you have to run a mathematical model on a sub atomic scale, or a radio frequency (4 Ghz) electronic circuit? or a low frequency (<25Mhz)?
Depending on your goal, you can treat electrons like little balls (classic physics applied to low speed), you need to treat them like physical waves (classic physics, applied to high speed), or like mathematical probability waves (quantum physics), or like mathematical probability time-independent (experimental theories, e.q. quantum-elector-dynamics and gravity-loop)
I think .. it depends ...
![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif)
On Jupiter, due to high gravity and particular atmospheric gas, electrons are free to move like if the whole planet was a big kind of conductor and you have matter that doesn't behave like it does on Earth.
When you study lightning, you work with high energy (GWatt) and again the electrons works in a plasma environment (the forth state of matter), which is not what you find with common wires and metallic recticles
It's like when you know how a mouse and a bird look like, then you enter in a cave and you see a bat
"plasma" is a "bat"? it flies like a bird, but it looks more like a mouse, is is a "flying mouse"? ... you can consider it a "flying mouse", it may/may not work for you, depending on your purpose.
Electrons on a slit, are they like photons? are they like tennis balls? or more like waves? Mathematically ... they are like a bat, an animal that you are not familiar with, but are you interested in knowing this for some purpose or are you only interested in measuring the potential field that they manifest microscopically?
I'm one of those people who argues that reality depends on how we process it ... so things are just definitions applied to a mind-model