48642751_1350__Lorenz___explain_xkcd__Description_of_images
Starting the walk [Description of images] 
When there is nothing outside the building the walk begins. It can though begin in other ways, but that is usually longer into a complicated story. The walk begins with Knit Cap Girl and Hairy walking together, but they also often walks alone as will be shown below.
1350: Lorenz - explain xkcd
Description of images