A term used to describe someone who knows a lot about many things, but, with the second tag "master of none" added it transforms into a derogatory phrase meant to emphasize how mastery of
one skill is important for deeper knowledge.
However,
one, oft forgotten tag is the third
one: "is oftentimes better than a master of
one". Instantly, the term reverses meaning, symbolizing how a person who knows a lot about many things that integrates their skills allows them to surpass even a master of
one.
Interesting phrase, nonetheless.
"
Man, Tom knows a lot! He's a jack of all trades, aint he?"
"Yeah, but he probably doesn't know a lot about specifics. You know how it goes: Jack of all trades, master of none."
"Jack of all trades, master of
one, is oftentimes better than master of one,
man. Tom's pretty smart."