Office hours: Tuesday 10:30-11:30, Thursday 10:30-11:30, Friday 10:30-11:30, in McNeil 519 or by phone at +1 (215) 898-1507. (I give preference to those physically present.)
I hold office hours during fall and spring terms, from first day through the last day of classes. (Academic calendar here.) If you come to office hours but don't find me, I'm likely at Penn but temporarily away from the office. If a few minutes pass and I don't return, please text me at (215) 898-1507.
Office hour cancellations/modifications: N/A