Definitions:
Developer - A person who directly contributes to the production of a product or idea. Examples: Computer Programmer, Factory Worker, Writer, etc.
Designer - A person who directly contributes to the design/voice/perception of a product or idea. Examples: Salesman, Graphic Artist, Musician, Producer, Evan.
Teacher - A person who directly contributes to the education of a knowledge, products or idea(s). Examples: School Teacher, Trainer, Professor, Evangelist, Manager, Writers, Researcher etc.
Hybrid - A person who utilizes one or more of the above attributes.
I imagine most of us and our titles fit into the hybrid category, but our desires may not. Can we divide all of our contributions to society at their core into these three counterparts? For example, I'm not saying a teacher is only a teacher, but a mixture of one or more of the three.