Earlier I used to wonder why there are different parameters in Science & Art to judge a "GOOD" work. Now, I feel, these are the reasons for the differences:
In Science, a person is treated good & given importance & respect based on his "work" irrespective of his age or experience. Because all scientific work can be proved & all scientific theories can stand the tests of scrutiny. Science is based on proof & reality.
However, in Art a person is treated good in a different manner. "Goodness" of a work is a perception here & not based on proof or reality. If you depend on "perception" which is again based on your ability to "relate" to the work, You cannot prove beyond doubt that the work is the best unlike in the field of science. So experience & age is given importance here.