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Genrich Altshuller , after gathering statistics on a large number of patents , suggested that compromises are at the heart of " low-level " engineering designs , while at a higher level the best design is one which eliminates the core contradiction causing the problem .
 Genrich Altshuller
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Genrich Altshuller