As stated in OP, problem solving requires more complete skills
所有跟帖:
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                    Complicated skills contain many small steps of proofs.
                     -trivial- 
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                        01/15/2015 postreply
                                                13:25:16
                    
                    
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                    My answers:
                     -SwiperTheFox- 
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                        01/15/2015 postreply
                                                13:32:53
                    
                    
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                    It seems that we have totally different understanding of what is
                     -trivial- 
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                        01/15/2015 postreply
                                                13:40:18