What are the advantages of computer simulation?

Answer:
Computer simulation can allow you to see how a system might respond before you design or modify it, so that you can avoid making mistakes and try different options without having to spend lots of money making different prototypes and testing them out.
First answer by Eccles-Jordan Trigger. Last edit by Eccles-Jordan Trigger. Contributor trust: 127 [recommend contributor recommended]. Question popularity: 140 [recommend question].