I'll give you some real corporate context. A scheduled task, pulling from a 65GB table with hundred of millions of rows, and no indexes. It runs for hours, and

I'll give you some real corporate context. A scheduled task, pulling from a 65GB table with hundred of millions of rows, and no indexes. It runs for hours, and completes with accurate data. During that time, it also saturated a 10Gbit interface(seriously), and consumed half of the IOPS on one our NetApp controllers. Now multiply that by 2x, 10x, 1000x for all of the other junk running in the wild. Slow, accurate, and impacting the rest of the organization.