In Step 1 of the instructions for this lab you are asked to redirect the output of a ls command to a file defined by a shell variable.
List the student home directory, including hidden directories and files...
Based on the wording it, it seems you are asked to do a ls -a but when you look at the solutions for the lab the vim editor is working with the output from ls -al
The rest of the vim editing instructions make no sense when you use the ls -a and I think the reason students have been using the correct output is because they are clicking the show solution button.
You are more than the sum of what you consume.
Desire is not an occupation.