Rationalization is the increase of rational orientations and activity in social life in modernity brought about by scientific-technical rationalism, metaphysical-ethical rationalism, and methodical life-style rationalism.

Rationalization is not reflective of an increased and general knowledge of the conditions under which one lives, but rather the opposite. The savage knows incomparably more about his tools. Modern man, who rides in a streetcar has no idea, and need have no idea, how it happened to get into motion.
Rationalization is the generalization of technical rationality as a cultural form, specifically, the introduction of calculation and control into social processes with a consequent increase in efficiency. But rationalization also reduces the normative and qualitative richness of the traditional social world, exposing social reality to technical manipulation.
Rationalization is not indicative of an increased and general knowledge of the conditions under which we live. On the contrary, the savage knows incomparably more about his tools.
Rationalization is a defense mechanism whereby one offers an explanation or interpretation of one's perceptions after the fact' [I knew he was bad news]).
Rationalization is a process in which a person enters, applying practical knowledge to achieve an end.