Today, this course you are going to take is about what is engineering and how to work with a complicated system. you guys should know the answers, because all of you guys are from the engineering course. Especially, when you design, build, debug and develop something new, during these process, you are working with the complicated system. How to program complicated systems and how would you know it actually works before producing it. Sometimes, the inspirations are from your daily life, you probably need to consider your personal life experience. And from the common everyday life to the tiny things that you cannot see virtually, and the inspirations normally exist in the tiny levels. Complicated system such as your laptops running Microsoft systems. That means the system is not able to see, which means you guys have to virtualize it, Engineering is here to help virtualize by using systems. Nowadays, the complicated systems are relatively reliable, and you guys work upon these and need to deliver the new outcomes which are reliable as well. This is what we do now and we are good at. Engineering is to help virtualize by using systems. In order to develop and produce a reliable system, you need consider more on the risks, potentials, predictability and accuracy.