If you can solve arbitrarily hard problems while on the spot you must be a stellar candidate from a problem solving perspective. If you can effectively articula

If you can solve arbitrarily hard problems while on the spot you must be a stellar candidate from a problem solving perspective. If you can effectively articulate your thought process as well you probably have great communication skills and can handle technical discussion and group problem solving for harder problems. It's gonna weed out a ton of people that can do the job but the guys that rock it will probably be valuable assets.