It is likely that somebody crossed a line,
Many eons ago,
Before privacy and personal space,
were clearly defined.
Probably someone thought out loud or in their mind,
“Hey, I don’t like you being so close to me.”
Or “I wish there was a way to stop people from entering a certain space I can call my own.”
Or “Can there be a way to shut people out?”
Or, “Should we have a system where people need to ask for permission before coming too close?”
And maybe that’s why we have doors.
Both physical and emotional.
Thank you for reading.