Apparently you want to be brainwashed.  Soundbyte answers are for brainwashing.  High school graduates are supposed to know better.

Required is basic electrical knowledge as learned by high school graduates.  You are expected to remember science concepts such as what Ben Franklin demonstrated over 250 years ago.  And what was taught about electricity in elementary school science.

Numbers require more knowledge.  Joules requires high school science.

Nothing new is understood until after three or more rereads.   Apparently you only read once - and then entertain anger.

Obviously said a 'whole house' solution is best protection. Apparently you want to argue rather than read.  That best solution also costs tens of times less - about $1 per protected appliance  What makes an protector effective?  That low impedance (ie less than 10 foot) connection to earth.  One need not be an electrician to understand 10 feet.  That does not mean 5 pairs of shoes. But those who post profanity often have comprehension problems.  Read without that emotion and profanity.

Everything has been explained. Nobody is going to spoon feed you.  Keep rereading until you finally get it.