To "know" a subject also implies a practical understanding of that
subject, which implicitly includes "knowing" how to apply it.

Retief

Lots of people KNOW how to weld. I like to just listen to conversations
about welding, and sometimes LMAO under my breath. Then you give them a
stinger, hand them some metal, set all the dials at zero, and reality sets
in. Knowing has nothing to do with doing, and sometimes the best doers
can't even read the books. Yet, as an incongruence, the ones who can and
have read all the books cannot take that knowledge and apply it to anything
of value in the real world. We hear discourses all day from "experts" whose
socks don't even match.

Steve