kids..
the last 3 years of my 0 life..were quite similar to a validating 'skills'..
observations and stereotypes..
it is logic meeting nature and its excrements..
it is a path of any skill...
any engineers Musha shugyō
further thoughts...
the concept : is applicable to any field : any skill...
en.wikipedia.org/wiki/Musha_shugy%C5%8D