The information ladder is a diagram created by education professor Norman Longworth to describe the stages in human learning. According to the ladder, a learner moves through the following progression to construct "wisdom" at the highest level from "data" at the lowest level:
Whereas the first two steps can be scientifically exactly defined, the upper parts belong to the domain of psychology and philosophy.
- Longworth, Norman and Davies, W. Keith. Lifelong Learning. London: Kogan Page Ltd., 1996; p. 93., ISBN 0-7494-1972-5