Often when you find that it's difficult to have a coherent discussion on a subject, the underlying reason is because there is unrecognized complexity in the subject.  As a result one person starts talking about one aspect of the problem, and then another person seems to go off in an entirely different direction.  It can be frustrating because these complex issues often require serious thought and strategic work.   

A lot of people, even those trained in the field, think that innovation is just one set of practices.  That's not the case.  How you do innovation depends on the kind of challenge you face.  And as a result, over the last 70 years, three very different methodologies have been widely adopted.  Today a fourth approach, Ecosystem Innovation, is emerging in response to the need to tackle complex and fast moving challenges in business and the world around us.