If anything, that might be the best way to identify someone that fits in a large corp like Google. Someone that doesn't mind going thru the drudge of studying esoteric CS problems probably will be more attuned to go thru the drudge of working for a large company like Google.
I'm thinking most of the time spent at Large Corp. Inc. is doing menial work, rather than hot projects where you learn and get to work on the cutting edge.