The answer why models are so beautiful!

EVE is based on the idea of modelling because models support two important facts:

Abstraction Good design is equivalent to understandable concepts and leads to an improved system's overview and insight. Models comprise constrains, bevavior, structure and non-functional properties on an abstract level. Developers do not need to deal with certain details of underlying technologies.
Comprehension Formal or semi-formal models follow a common language definition, which is comparatively easy to understand. Therefore, people from different fields can understand design concepts in a common way and are able to discuss alternatives and consequences.