They have certainly impacted real customers. The idea is that ideally these outages can be easily stopped, and your engineers know exactly what the chaos monkey

They have certainly impacted real customers. The idea is that ideally these outages can be easily stopped, and your engineers know exactly what the chaos monkey did rather than just seeing an uptick in errors. Basically you are creating a fault at a time of your choosing to prevent the same fault from occurring at the worest possible time.