Athena's lips twitch. She can't see the screen from this vantage, but the succession of swift clicks makes it clear that he hasn't been getting much studying done. "The double-edge sword of wifi," she observes with dry amusement. "On the one hand, you have access to everything; on the other, you have access to everything. Algebra simply can't compete with the rest of the internet." Algebra's a shot in the dark, more likely to be wrong than not, but a wrong guess creates an opening for him to correct her.