[Mathematical concepts aren't SLUUUUUUUUUUUUUUGS AUGH. Plenty of room for pickiness. And even if there wasn't, she would anyway.

Either way, she shakes her head to the question, expecting him to take one of the students' chairs. The sudden appearance of a different chair, however, gets her rapt attention.]

...well, that certainly makes a good starting point. I've not seen anyone do that before.