DNS入門/dunning-krugerについて、ここに記述してください。

https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect

https://www.psychmechanics.com/2017/06/the-dunning-kruger-effect-why.html
  The Dunning-Kruger effect: Why the incompetent think they're competent 

  残念なことはDNSではlevel 3に到達できる入門書が存在しないことだ。ネット技術全般かも。

　おかしな入門書を読んだだけで、中級者になったつもりのひとがいる。

-- ToshinoriMaeno <<DateTime(2018-10-18T17:36:21+0900)>>

https://1.bp.blogspot.com/-1m78dz-Eamo/WS9_rqu7ifI/AAAAAAAAEY0/4OWYfWVWrwAvhsexPVJQLEHmCnxwi9L_QCLcB/s400/mt-stupid.png

competence vs. self perception of Competence


According to the researchers who did the above study,
the less competent people do not know that they’re less competent because 
they’re not competent enough to know they’re less competent.


In other words, to know that you’re not competent enough you have to know that your present skill level is way below the level you can reach. But you can’t know that since you’re unaware of the levels you can actually reach. So you think your current level is the highest you can reach.

Kruger, J., & Dunning, D. (1999).
  Unskilled and unaware of it: how difficulties in recognizing one's own incompetence lead to inflated self-assessments. Journal of personality and social psychology, 77(6), 1121.

https://www.ncbi.nlm.nih.gov/pubmed/10626367  (PDF 本文は有料)

Ehrlinger, J., Johnson, K., Banner, M., Dunning, D., & Kruger, J. (2008).
  Why the unskilled are unaware: Further explorations of (absent) self-insight among the incompetent.
Organizational behavior and human decision processes, 105(1), 98-121.

in contrast to high performers, "poor performers do not learn from feedback suggesting a need to improve".[11]