many people that you think you know are incomplete snapshots of that person at that time

Later on when you see them again, they have 
A) are not the same person as before 
B) in your mind 
C) & incomplete to begin with

We think we know who people are, we guess what they’ll do - sometimes we even think were right!

creating and destroying; built flying cars & autonomous vehicles, now building /faust, more here: /july, web: july.rocks

I wrote something along the line of this in one of my college philosophy class' essay, about putting myself in other's shoe, to see where they come from so I can understand their words and actions.