What the world looks like from completely different angles

We build our own reality. Even colors are products of our mind. Vincent Van Gogh told his brother he could see twenty-seven different shades of grey. Who knows if my red is the same as your red? Even if the two most distinguished color experts in the world were asked to dress up Santa Claus, and one were asked to pick the coat and the other the trousers you can be sure the top will not exactly match the bottom.