take unnecessary pains to study an insignificant [insoluble] problem;split hairs;get into a dead end;get into a blind alley ;

I have seen investors like to play with figures which are meaningless to stock investment.
过去我见过许多投资者喜欢钻牛角尖,玩数学游戏,偏离了投资的真正意义.
来源:互联网摘选In one way , this is very frustrating, but in other ways, it is fascinating.
找不到想找的东西, 固然令人丧气, 可是,如果不钻牛角尖, 那也是个令人兴奋的发现.
来源:互联网摘选
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