Modeling and simulation are intellectually creative and 
quantitatively rigorous, mainstream ways of connecting ideas 
with reality. The time has come when everyone engaged in 
intellectual inquiry needs to model and simulate the 
phenomena of his or her interest. Models help us understand 
how things are organized and function. Simulating models is a 
way to learn how systems and their components grow and 
change.
A powerful and rigorous understanding of systems results when 
normal verbal thinking is connected to quantitative 
simulation using the systems diagrams and simulation 
programs. The process of representing the fundamentals of 
science also shows how similar all the branches of knowledge 
are, often using similar functions under different names.