Prof. David Malan of Harvard University answers randomly selected speed dating (and maths) questions with Oxford Mathematician Dr Tom Crawford. Full list of questions with timestamps below.

02:17 – Can you tell me some of the maths topics you studied at university?
05:12 – What is your favourite movie?
06:41 – Do you think magic is real?
07:43 – What is your best chat-up line?
09:04 – What is something that makes you feel old?
11:20 – What is the most adventurous thing you’ve ever done?
14:30 – If you won the lottery, how would you spend the money?
16:14 – If you could commit one crime without being caught, what would it be?
18:16 – What is the most obscure class you took at college?
21:09 – Do you have a favourite equation?
23:05 – Do you play video games?
25:16 – What is your favourite demonstration in CS50?
26:40 – What is your favourite takeout meal?
27:34 – What makes you laugh?
28:24 – What is the worst/best fan-mail you have received?