The fact that we are able to simulate our systems in such an interactive way without having them implemented really helps us get closer from reality, as it simulates what would happen if these features where actually being used by real customers daily! We can test out new ideas for future software releases before they go into production or even start development; this saves time because when you have finished developing your product/software there's nothing left but putting everything right back together again after testing which takes months (if not years) longer than doing things correctly first off - so why waste all those hours?