A Quote by P. Langley on science, testing, and theory

[Scientific enterprise] is usually conceived as being made up of four main kinds of interrelated activities: gathering data, finding parsimonious descriptions of the data, formulating explanatory theories, and testing the theories. Sometimes the second category (description) and third (explanation) are merged. (note that they do not consider new data measuring devices among other things)

P. Langley

Source: Scientific Discovery, 1987, p17

Contributed by: Zaady