similarities and differences

Associations look arbitrarily for similarities between things and then try to analyse the basis for those similarities.[1] These similarities, can however, be categorised. In his analysis of the human sciences Michel Foucault discovered four types of similarity which dominated thinking in the past.

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[1] Michel Foucault, The Order of Things, an archaeology of the human science, New York, Vintage Books, 1973 (1966) pp. 17 ff.