Minimum Viable Knowledge is the amount of information that you need to know about a subject to operate effectively in that domain. Tim Ferriss is the master of how to achieve the minimum effective knowledge on any topic quickly, easily and elegantly.
Learning how to learn is one of the main things that makes a good business person into a great thinker. All the things that can hold back a natural strategist, become a strength once you can articulate and accelerate the way that you absorb and process information. Being a polymath is often considered a weakness until you become a credible specialist in being a generalist. Tim has created a robust system for something that a good Renaissance Man has always known: how to quickly learn just enough about something to be dangerous.
