According to Covey (see my post on the mission statement) by understanding that people perceive things differently, we can understand each others better. People can even change the way they perceive things. It is called a paradigm shift. Actually people can change their lives by shifting the paradigm!
The picture I'm posting below is a classic one. I post it as a reminder to all of us, as it demonstrates how differently people can see and understand the same thing. None of the perceptions are incorrect.
What do you see?
A beautiful young woman wearing a necklace or an old lady?
Or something else?
What you see is a result of your conditioning and determines your attitude and behaviour towards the woman in the drawing. When we acknowledge different alternatives, we can better understand each others and even change the way, we perceive things.