Definition
A Model is a simplified representation of a real object, process or phenomenon used for analysis, Forecasting or decision-making.
Human Explanation
It helps examine reality without having to experiment directly on it.
Why it Matters
Models support understanding, comparison of alternatives and prediction under defined assumptions.
Conceptual Boundary
A Model is not reality and is not the same as Modelling, which is the process used to create and apply models.
Practical Perspective
A Model should be judged against its purpose, assumptions, input data and performance on relevant evidence.