Most people define learning too narrowly as mere problem-solving, so they focus on identifying and correcting errors in the external environment. Solving problems is important. But if learning is to persist, managers and employees must also look inward. The need to reflect critically on their own behaviour, identify the ways they often inadvertently contribute to the organisation's problems, and then change how they act.

Chris Argyris "Teaching smart people how to learn" in: Peter F. Drucker (1998) Harvard Business Review on Knowledge Management. p. 82