That's an odd reaction to have. Ten watches Garrot work through his thoughts, watches him come to some conclusions, and then glances down at the Etch-a-Sketch again. What was the best way to say he held a bachelor's degree and was hoping to pursue a master's degree? He couldn't decide, so he chooses to answer the bit about Twelve. He starts scritching away and, surprisingly longer later he holds up the message:

"twelve fights
they like it
good at Go
and chess"