Why do people shake hands or bow to greet?
The Peace Machine
Why do people shake hands or bow to greet?
You stick out your hand. The other person grabs it. You both pump up and down like you're operating a weird friendship machine. Why do humans DO this?
For most of human history, meeting a stranger was dangerous. That person walking toward you might have a weapon. A knife tucked in their belt. A rock hidden behind their back. Your brain screamed: THREAT ALERT.
