Only few instants are enough to create an intricate net of judgments and comparisons.
We relate others to the separate idea we have of ourselves: he is younger, she is older, he is shorter, she has a better education, he is wealthier, etc.
Our separate self feeds out of these comparisons in order to sustain its bogus identity.
Other people, just as the void surrounding us, allow us to define the perimeter of our ego, the space of isolation where we have secluded ourselves.
This is bound to massive pain, which will continue till we finally experience that the ego does not exist and the others, as well as the void, is us.