Which tester or testing category are you?

I would simplify it as:

Activity: Testing;

Doer: tester, in the categories a,b c.:

 a.Tester who uses code, debugging tools, and/or other greybox tools: greybox/coding tester
 b.Tester who doesn't use any code, nor greybox tools: blackbox/noncoding tester
 c. Developer who does unit tests, or does system troubleshooting: whitebox/coding tester.

(Most professional testers would thus be either greyboxers or blackboxers; while whiteboxers will almost certainly be developers) 

it's like, an Engineer testing machinery: either by using fancy gadgets or just by doing the old 'tap it, run it, look, smell, and listen.' 

Maybe tester-life would be much clearer, if we go back to our roots of white, grey, black. 

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