We know nothing of each other. We are each trapped in our own mental world where we can only bump up against other people, but never truly touch them. We see others only through the lens of our own experience, prejudices and psychology. Every interaction between people is just two alien civilizations trying to communicate without knowing the other’s language or even what type of life form the other is. We are trapped in our own heads sending out signals saying “I need validation or comfort or recognition” and the person we are talking to is standing next to us sending out those very same signals, but they can’t understand ours and we can’t understand theirs. Friends and loved ones are those whom have recognized this fact and know they can safely ignore each other.