"As to methods, there may be a million and then some, but principles are few. The man who grasps principles can successfully select his own methods. The man who tries methods, ignoring principles, is sure to have trouble."
 
Ralph Waldo Emerson
Unknown Unknowns

Unknown Unknowns

"There are known knowns; there are things we know that we know.
There are known unknowns; that is to say, there are things that we now know we don't know.
But there are also unknown unknowns – there are things we do not know we don't know."
 
United States Secretary of Defense, Donald Rumsfeld

Author's note, all frameworks are inherently flawed, so apply them wisely. The utility of a framework is always dependent on the individual problem at hand.

HEART Framework

HEART Framework

First Principles

First Principles