In order to be a scientist in any field, one needs to think from a scientific standpoint. If he thinks in unsystematized, lawless, or inexact terms, he cannot practice science. This is especially true of Christian Science, in which healing is accomplished by thinking from the scientific and unqualified spiritual sense of good. This remands the material sense of evil to nothingness, its only absolute state, and frees the patient. Mrs. Eddy says in Science and Health (p. 456), "Strict adherence to the divine Principle and rules of the scientific method has secured the only success of the students of Christian Science."
Among the definitions of the word "science," are these: "any department of systematized knowledge"; "a branch of study concerned with observation and classification of facts, esp. with the establishment of verifiable general laws"; "accumulated knowledge systematized and formulated with reference to the discovery of general truths or the operation of general laws." From these definitions it can be seen that to think of anything in the scientific sense is to persist until we see it as systematized and based on law.
The natural scientist does this type of scientific reasoning when he investigates the stars, when he explores the atoms, or when he studies the growth of a plant.