Concept Hierarchy

Famous quotes containing the words concept and/or hierarchy:

“To find the length of an object, we have to perform certain
physical operations. The concept of length is therefore fixed when the operations by which length is measured are fixed: that is, the concept of length involves as much as and nothing more than the set of operations by which length is determined.”
—Percy W. Bridgman (1882–1961)

“In a hierarchy every employee tends to rise to his level of incompetence.”
—Laurence J. Peter (1919–1990)