Well, actually his detractors would say: just bla bla bla... words by staying in a setting that allows for free association, the Freudian setting, the psychoanalytical setting people would produce some evidence, behavioral evidence, that was not considered to be scientific by most of science for many many years, but still, yielded many many insights into human behavior in particular, around the turn of the century, Freud published The Interpretation of Dreams and in this book he came up with several concepts that I want to examine here with you today 