Sunday, April 19, 2015

insight accumu due to 5Y@a job - ! by default

Many interviewers assume the length of using something on a full time job indicates accumulation... Other interviewers test the depth of your insight..
You know you have insight, mileage, accumulation if/when ..
..when  you know most of the important and relevant [1] terms in the lingo. Interviewers often go deeper about a new "construct"[2], and question its motivation/history and limitations.
....if you know the __connections__ between the concepts. Without a mental map, there would be way too many unconnected lingo terms leading to info overload
....if you know what new developments are only marginally important to your field, so you can focus on the really important
..if you can /separate the wheat from the chaff/滥竽充数/. I think often the real veterans would exchange a secret handshake and acknowledge each other very quickly. Eg: Dad (Tan Jiajian) knows his peers in the domain.
.... If you can't quickly separate the wheat from the chaff, then probably you aren't experienced enough.
..when  you know you have grown much stronger than a junior person new to the field. How soon this happens is poorly correlated to # years
..when your mental "book" has grown thin -> thick -> thin. Eg: math..
..when you know you can master a "local" system quickly, thanks to the accumulation /under your belt/. Eg: Avichal Gupta...
As you can see, many of the indications/evidence of insight are related to evaluative discussions (including interviews). I'm not being narrow-minded and focus exclusively on job interviews. No. In any team,  very quickly person A would size up person B (and vice versa), and often have a rough number in his head about "how much B knows our shared domain". 
[1] it's subjective but I feel 90% of what consider irrelevant is clearly irrelevant.
[2] this includes new choice, technique, best practice
--
German said one needs to be in a project for 6Y, but I disagree. I feel a wide range of non-trivial challenges is more important, and I feel we are unlikely to get that by staying in one project.
eg Perl -- I used Perl for 3 to 5 years..
eg SQL -- I used SQL for many years before GS, but my accumulation was solely in GS!
eg Threading -- not much used. Mostly accumulation by reading...
eg option math –
eg C++ -- see post on c++IV: knowledge more important than coding experience

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New York (Time Square), NY, United States
http://www.linkedin.com/in/tanbin