Since I hadn't read the book, I assumed I was going to be watching a movie about a group of kids just trying to find their way out of a huge, complicated maze. Yes, it was that. But it was also ...

Your program did not have any bugs. Try making a bigger, more complicated maze and start over. If your volunteer crashed into one of the maze's walls, however, you need to debug your program!

It's quite a complicated maze, if you think about it. I'm 15 miles from my house right now, and I've got a very busy urban area that I have to navigate home. It's potentially different every day.