“Just as current cars have one battery wire connected to the metal frame, but you can’t even get the tiniest little shock touching the car, even though if you short out the battery you can melt through a screwdriver.”
Yes. DC vs. AC.
However, a wet tongue can get quite a thrill from a 9-volt battery.
And another thing— someone correct me if I’m offtrack here but I have long understood that high breads run on yeast, not some fancy combination of fossil fuel and electric power.