Keep in mind when using these analysis and design tools that the data output is only as good as data input and the methods the programs are using to find solutions. The analyst is also responsible for deciding where and how much simplification to use and how those choices affect the final results. A good engineer knows the limits of his knowledge. He is not afraid to ask someone with experience for help. This includes upper classmen, instructors, grad students, and people in industry.
Experience also provides insight as to when and how a rule of thumb can be used and why.
Advice to freshman and sophomores. And maybe some uninformed upperclassmen. The input is cumbersome and buggy, but it works. Static Stability example. As part of the design of an aircraft a static stability alaysis will be required.