Mantras such as 'If you can't measure it you can't manage it' have become s
tandards of management practice. At no point are the logic or assumptions t
hat link measurement to performance questioned. Formal measurement has its
place in the broader art of service leadership. But so do the other aspects
of assessment, including personal experience of the service, observation,
frontline input, customer meetings and a raft of informal monitoring activi
ties. When conducted properly, these other ways of knowing are just as reli
able, valid and manageable as any quantitative system. More quantification
is not necessarily better Sen,ice leaders must stand back and understand wh
en to use the science of measurement and when to develop the art of managem
ent.