I don't know if you've used Adobe Illustrator before, but if you did you might know that you can place graphics from external files in your illustrator drawing. Those files can also be other illustrator files. You see where this is going yet?
Yes, you can actually place an illustrator file inside itself. If you then save the file, it tells you that an included file has changed and asks you if you want to reload. If you reload, that creates an unsaved change. I have created an Illustrator file that will always have unsaved changes.
Anyways, I thought that was kinda funny. Honestly, I didn't expect that to work.
