Classicist and positivists do reveal some principles however it can be said that they oppose the other person to an degree. Classicist criminology can be an approach which looks at the idea of rational action and free will. This approach was developed in the eighteenth century and early nineteenth century whereby they intended to produce a legal justice system that was clear and respectable and was based on everyone being identical. Positivist criminology is founded by the notion of scientific knowledge of criminal offense and criminality, the essential concept is based on the theory that behaviour is determined. There are two types of positivism that make an effort to seek the reason of criminal offense and deviancy and they are biological positivism and internal positivism. The origins of positivism and the two interrelated advancements were from the nineteenth century.