Supercomputers help us solve problems today instead of tomorrow. Their ability to perform computations very rapidly and handle extremely large volumes of data effectively makes them invaluable for research projects where large volumes of data must be processed.
The particular class of problems, known as Grand Challenges, are problems of which the full solution requires semi-infinite computing resources. The possibility to simulate and model results is possibly the most important advantage that supercomputers have. This in turn supports industrial competitiveness, which depends to a large measure on planning for the future today - and well-established industrial competitiveness is a precondition for economic growth.