Forgive my ignorance, but what's the point of a "super computer" in a world where we can have an application access thousands of machines around the world at once with a button click to compute something? I could see maybe cost savings, but considering how much it costs to build the machine and that I doubt it's used to 100% capacity at all times. Is it a security thing, or just a pride thing? What's the advantage over just farming it out to a cluster in the cloud?