The problem that emerges is that of the status and nature of specifically psychodynamic studies. Home worked out thoroughly one of the two possible answers, namely that psychodynamics is not a scientific but a humanist study. In psychodynamics, the data are obtained by subjective observation of ourselves and identification with others. If psychodynamic studies are scientific, then there are two kinds or levels of science. When 'natural science' arose, scientists with the usual human desire to get everything under their control and in their power, simply denied 'mind' and dogmatically asserted that it was nothing but 'brain'. Science is limited to the investigation of inanimate objects, which seems to imply that some other kind of thinking must deal with live subiects. K. M. Colby also illustrates the failure of a thinker, who certainly understands the limitations of physical science, to establish psychodynamic science satisfactorily.