Skuli: I'm gonna draw a zombie. One small eye and one big eye.
Skuli draws a small circle and then a bigger circle next to it.
As Skuli draws, his concepts expand. He demonstrates an understanding for the way that a circle can be used to represent many things. The zombie eyes can easily become a mummy family.
This [the dot] is the little brother mummy, this [the small circle] is the big brother mummy, and this really big one is the daddy mummy.
Silas: Well actually, that's medium, that's not big.
Skuli: I can draw a really big one.
Skuli starts with a circle and then continues around and around -- as his drawing spirals inward his circle gets filled-in [see filled in circle on the right side of the page]. Thus in this case the biggest circle is not the one with the greatest circumference, but rather the one holding the potential to make the largest circle should the lines unravel.
Skuli then moves on to draw "paths" around the mummies.
Silas, who has been watching from across the table, grabs a green marker and goes over to join in. This spontaneous collaborator seems to go unnoticed by Skuli, who remains focused on the changing field of ideas expressed in his drawing.