The greatest waste โฆ is failure to use the abilities of peopleโฆto learn about their frustrations and about the contributions that they are eager to make.
W. Edwards DemingOne cannot be successful on visible figures alone ... the most important figures that one needs for management are unknown or unknowable, but successful management must nevertheless take account of them.
W. Edwards DemingScientific data are not taken for museum purposes; they are taken as a basis for doing something. If nothing is to be done with the data, then there is no use in collecting any. The ultimate purpose of taking data is to provide a basis for action or a recommendation for action. The step intermediate between the collection of data and the action is prediction.
W. Edwards Deming