[autokad]

that's partially true; however, I still think I was right.

yes, there are places that don't heat up because the current doesn't go through them, but only because they have easier paths. if the electricity wanted to go through them, they would heat up hotter than anything else.

the point is, things can corrode, electricity goes in places it wasn't intended or through resistances it wasn't intended, and becomes a fire hazard.