Incorporating command line arguments enhances user interaction with an application, allowing users to specify file names dynamically rather than recompiling code each time. This lesson explores how to implement command line arguments in a Go application, specifically for counting words in text files. By utilizing the `os` package to access these arguments, developers can improve the interface and handle multiple files seamlessly, mimicking the functionality of the UNIX `wc` command. Key insights include error handling for missing or insufficient arguments, processing multiple files, and calculating total word counts. Overall, implementing this feature not only streamlines usage but also prepares the application for broader distribution.