It will be more convincing to use empirical analysis, but it will do without empirical analysis, and it will do without empirical analysis.
After all, the foundation is limited, and if you don't know your own model, the defense will be very embarrassing.
Undergraduate students pay attention to the application of econometrics, but they lack some computer programming knowledge when using Eviews, Stata, Matlab and other tools to estimate and even simulate econometric models.