A model can be more than just a pretty picture. The 3D visualization allows project stakeholders to better understand the building as it comes alive before their eyes.
A 4D model looks just like a 3D model, but it contains even more information about installation rates, productivity rates, crew sizes, and costs.
And a 5D model looks just like a 3D model, but it includes component pricing and budgeting reports for the job and discover this.
Put this all together and you get the iterative effect of 3D-4D-5D BIM. As the model grows in complexity, it becomes the data-rich font of project knowledge. Each stakeholder can approach the model with different questions and what-if scenarios and receive near-instant analysis of the situation