Measurement
There are many standards that can be used to evaluate the status of a science, and one of the most important is how well variables are measured. The idea of measurement is relatively simple. It is associating numbers with aspects of objects, events, or other entities according to rules, and so measurement has existed for as long as there have been numbers, counting, and concepts of magnitude. In daily living, measurement is encountered in myriad ways. For example, measurement is used in considering time, temperature, distance, and weight. It happens that these concepts and quite a few others are basic to many sciences. The notion of measurement as expressing magnitudes is fundamental, and the observation that if something exists, it must exist in some quantity is probably too old to attribute to the proper authority. This notion of quantification is associated with a common dictionary definition of measurement: "The extent, capacity, or amount ascertained by measuring."
A concept such as distance may be considered to explore the meaning of measurement. To measure distance, one may turn to a simple example of a straight line drawn between two points on a sheet of paper. There is an origin or beginning point and an end point, and an infinite number of points between the beginning and the end.
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