Conceptual Modeling - Why do it?

Why do we involve in conceptual modeling - to interface knowledge between all players involved AND to bring into view ideas - not tables and entities of the business - be that motivation,  process or information.

This gives us a view of overall picture and form a great way to accumulate business knowledge. As this is a collection and position of ideas, this can encapsulate all the components of enterprise - that are of business importance. Ideas might be as simple as Risk and market segmentation. How these play down into the multiple models downward - process & data in layer 3 of Zachman - is a different exercise - typically called logical modeling. This is more to do with knowledge accumulation.