Maybe you have written an essay about your dream home for which you are still saving. There will be ample time to explain and discuss these tools. None of these models are sufficient. If computer models were sufficient, India and Pakistan would have been less likely to have exploded their nuclear bombs earlier this year. There would have been no requirement to run a train traveling over 100 mph and loaded with nuclear waste material into a reinforced barrier just to test that safety devices, packing and packaging of the hazardous material worked as intended.
Human interactions are perhaps the most difficult to model well.
But modeling can help us understand many of the interactions in and between complex systems and reduce the level of uncertainty in decision making. So we will study systems models and modeling as well.