In this podcast, the Radio Free HPC team looks at the mission parameters driving Exascale development. Henry is concerned that a system designed for DOE applications will be tailored to that particular mission profile and therefore not be a performing system on many of today’s applications. Will the TOP 10 Exascale applications all be about High Energy Physics? Will Big Data applications be able to scale on such a machine? Who’s driving the bus? Most of all, will Dan ever come to understand the question?