Sorry you're entirely right. I just can't get over how unbelievably amazing this is: https://news.ycombinator.com/item?id=35079
One of the best comebacks in HN history.
Thanks for the reference. Interesting to see Drew Houston popping in because he was just starting getdropbox.com
...and SNAP! pg was dead right. Didn't read that thread at the time. Thank you.
Colin won the Putnam as an undergraduate student. The Putnam award is not a mathematics research award like the Fields Medal or the Abel Prize. It's a mathematics competition. As such, Colin didn't win the award for any particular work.
It's still quite impressive though. I would say Colin's work developing scrypt has more applicability to cryptography than his Putnam award.