Update intro

theme1/PE103/vcs.md

@@ -31,12 +31,14 @@ with a chaotic mess which achieves the above goals in a poorer manner.
 You will likely resort to several almost-same-but-not-quite files
 variously named like so:
 
-<!-- - `notebook.ipynb` -->
-<!-- - `notebook-2024-05-01.ipynb` -->
-<!-- - `notebook-2024-05-01-final.ipynb` -->
-<!-- - `notebook-working.ipynb` -->
-<!-- - `notebook-test.ipynb` -->
-<!-- - `notebook-final.ipynb` -->
+- `notebook.ipynb`
+- `notebook-2024-05-01.ipynb`
+- `notebook-2024-05-01-final.ipynb`
+- `notebook-working.ipynb`
+- `notebook-test.ipynb`
+- `notebook-final.ipynb`
+
+Or a situation depicted by a famous PHD Comics [strip][notfinal]:
 
 [![](http://www.phdcomics.com/comics/archive/phd101212s.gif)][notfinal]
 
@@ -47,8 +49,8 @@ system.  That might work in the simple cases, but it will soon break
 down as you do more work on your project.
 
 You want to avoid the cognitive overload of dealing with messy schemes
-based on file names.  You want to do is learn to use a version control
-system properly.  
+based on file names.  You want to use a version control system
+properly.
 
 
 ## Version control in practice: Git