When two people look at the same object from different angles, the image one person sees and describes may be different from that seen by the other. For example, a sphere made of one green and one red hemisphere may look like a green sphere from one perspective and a red sphere from another. To others, it will look to have varying amounts of red and green. Whatever your perspective of the sphere, your description of it will be true to you.  

The feedback you receive is the truth as seen from somebody else’s perspective. The feedback you give is the truth as seen from your perspective. There is bound to be a difference between the perspective of the person giving feedback and the person receiving it. Forget this simple fact and you could run into problems.