Just as Beauty lies in the eyes of the beholder, 'Perfection' follows the same rule for the beholder...
An individual we see as 'perfect' conforms absolutely to the description or definition of an ideal in our minds. An ideal we have created based on our own personal life experiences and conditioning. We would imagine this individual to be excellent- complete beyond practical or theoretical improvement.
Though this may be a mere figment of our imagination, this 'perfect' person exists for each of us in our spheres of life; A person who exactly fits the 'bill', as it were... completes a certain need which too has been created by our own thoughts. We see him/ her as a being devoid of any and all flaws, defects, or shortcomings: the absolute circle- accurate, exact, and correct in every detail. Utterly complete- Perfect. A person who is unblemished and pure in all aspects of our requirements of perfection. Possessing all the qualities and traits that we have sought out, and who features the highest degree of excellence that we have created in our visions.
I suppose then, that it is fair to say that Perfection comes from our own experiences, and we register it as what we want and desire. Our idea of the perfect person varies greatly from the ideas of others searching for perfection. We may feel that their ideal of perfection is imperfect, just as our 'perfect' will not be seen as perfect by them.
-JB