became expert via external QQ benchmark` !!localSys xx

Suppose I invest heavily and become very productive on a local c++system. Similarly, a java, or SQL, or socket, pyhton .. system, but the point is — Any local system uses only a small portion of the language features.. at most 5% of the typical high-end interview topics on that language.

Therefore the project experience won’t give me confidence to be an expert on the language, but acing multiple QQ interviews does, as these interviews compare dozens of competitive, motivated and qualified candidates across a wide field.

I grew very confident of java through this type of external benchmarking, in contrast to internal benchmarking within the local team.

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