Six Sigma and the Mobile Workforce [the broken link was removed] by Lynda Finn and Sue Reynard:
This type of data collection also helps process owners or managers spot systemic problems that appear across processes. For example, a process owner reviewing all field agent reports may detect problems appearing in more than one location. Now, a fix made in one location can be incorporated into MTA based systems so all agents will benefit immediately. This type of systemic leveraging of learning and improvement is what generates the biggest payoffs from Six Sigma investments.