On the issue of causation investigation
troubleshoot the problem, analyze the problem to find out two things: what is the cause and which is the fruit, if the cause confusion or mistake, then the direction of the analysis will be wrong, answer analysis is wrong.
Since the call chain online service is very long, more important to distinguish between cause and effect;
On the issue of causation investigation
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Origin www.cnblogs.com/big1987/p/10984244.html
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