Conceptual modelling

Conceptual modelling in quotes

We cannot solve our problems with the same thinking we used when we created them.
– Albert Einstein

Being abstract is something profoundly different from being vague … The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
– Edsger W. Dijkstra

Abstraction is one of the greatest visionary tools ever invented by human beings to imagine, decipher, and depict the world.
– Jerry Saltz

There are only two hard things in Computer Science: cache invalidation and naming things.
– Phil Karlton

The act of describing a program in unambiguous detail and the act of programming are one and the same.
– Kevlin Henney

Much of the essence of building a program is in fact the debugging of the specification.
– Fred Brooks