system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does electric current in a coil move along the wires instead of going shortest path straight through the copper?
gpt
The wire is insulated. It's not obvious, but wires in coils have a layer of shellac on them that acts as insulation.

I once had to find an epoxy that was electrically insulating and thermally conductive. Yes, they make exactly that thing.