approach, is to formulate the problem in relation to what 
     is already known, to make additions or extensions on the 
     basis of accepted principles, and then to proceed to test 
     these hypotheses experimentally. Another, which may be 
     called the mosaic approach, takes each problem for itself 
     with little reference to the field in which it lies, and seeks 
     to discover relations and principles that hold within the 
     circumscribed area.

     Von Békésy then proceeds to introduce his two paintings:

     A close analogy to these two approaches may be found in 
     the field of art. In the period between the eleventh and 
     seventeenth centuries the Arabs and the Persians 
     developed a high mastery of the arts of description. . . . 
     Later, during the Renaissance, a new form of