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 Unfortunately, its simplicity is also its weakness since it is frequently too simple to represent realistic problems. 
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 人生得意须尽欢 
莫使金樽空对月  | 
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![]()  | 
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| 
 
 
 
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| 
 
 
 
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 Unfortunately, its simplicity is also its weakness since it is frequently too simple to represent realistic problems. 
![]()  | 
|
| 
 
 
 
  | 
|
| 
 
 
 
  | 
|
| 
 人生得意须尽欢 
莫使金樽空对月  | 
|
| 
 
 
 
  | 
|
| 
 
 
 
  | 
|