A Large Lecture with 100 Students

Before the fall semester began, my days in August went more or less like this.

Every morning at nine, I went to the lab holding Mom's hand.

On the way, we'd stop by a convenience store, where Mom bought an iced Americano and I got a sweet strawberry milk.

Slurp-*.

By the time we got to the lab, my strawberry milk was already nearly gone.

As a bonus, Mom would wipe around my mouth, saying I'd gotten a milk mustache.

In the mornings, I supervised Jae-hyuk oppa and So-young unni as they read papers.

“Professor, I don't understand why this inequality in the lemma holds.”

“Let me see. Aha, they used Hölder's inequality twice here. The author skipped the intermediate steps.”

“Oh. I get it. Thank you.”...