On 09/12/2016 1:37 PM, trader_4 wrote:
....

... When you're using something you
should know what it is and how it works.

As a general statement, that's simply unrealizable...a very large
majority of people (and many of those are quite intelligent and
reasonably knowledgeable) don't know how many of the objects they use
daily and mostly, competently, actually "work". It simply isn't a
prerequisite.