What does any of this have to do with the car battery situation? You can lick your fingers and touch each end of a car battery with a hand. It won’t hurt you, much less kill you. You are ignoring the resistance of the path the current needs to travel. Without enough potential difference, the current has no reason to pass through the body.

The level to which you fail to understand a basic concept while brandishing your credentials is a bit embarassing. There are certainly many others with the same or lesser amount of experience than you who understand this scenario better than you do.

Note that nowhere in my critique have I attacked or undermined your claimed experience, nor have I made any attacks on your character. Besides this: you are acting like a child.