I am guilty of doing interviews with silly questions (200gb file, in memory). I usually start off the test with something like "This is a silly contrived questi

I am guilty of doing interviews with silly questions (200gb file, in memory). I usually start off the test with something like "This is a silly contrived question, mainly we just want to see how you think. Talk about what tradeoffs you're making and why." It tends to work well - the candidate tends to not be so defensive or anxious and will relax a bit to walk through the problem.