A hand shake, a hug, a kiss on the cheek, a simple "hey" ...how do you greet your friends?

You are a dog, and dogs can't understand people things. But as you are smart enough to write and use a computer I will try to explain: Shaking hands maybe it's because instinctively in the past we use to do this as a way to feel the other person touching it and maybe while the time passed it became a "shortened tradition" evolving to a simple "hand shake". And the thing about waving hands, I think we do that because we want to make the other person to look, our eye tends to catch things that move, so like this we are more aware of the possible hunters or preys, you might understand this because you are a dog.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.