[davorak]

> "what's the hardest thing you have ever done?"

There is a good chance they meant what project stretched your abilities the most. Or which project did you have to grow the most to complete.

Learning and stretching ones self varies in difficulty from person to person. For many people it is considered hard to extremely hard so ability stretching/growing project is synonymous with a hard project.

> Also one of their interviewers called my code "shaky" after pairing, which could be true, but it's not very constructive or specific is it?

No that is not very specific, which is unfortunate. A founder's comment in this thread mentioned that they think their time is best spent reviewing more application rather then going in depth with fewer. So not giving in depth, specific responses is complementary to their strategy of interviewing more people.

They might be better off giving less or no feedback rather then anything off the cuff. Hard to balance that against an applicants frustration at getting no feedback however.