The common definition of education is simply wrong when you consider how education actually occurs.
A proper definition of education will have to cover these four important aspects of how we become educated:
The necessity of having and manipulating knowledge, skills and information
The helpfulness of teachers, without requiring them
The constant need to see through the inherent illusions that arise from our unconscious thought processes, and
Our ability to influence our states of mind
Based on these four criteria I define education as a process of cognitive cartography.