The project progressed beyond the state of the art in several seminal respects. It showed that the concept of self is much more fundamental to science and philosophy in general than commonly thought. Since the self comprises a perspective on the whole world, its investigation has far-reaching consequences for the understanding of the interrelationship between consciousness and the intersubjectively shared world.
The project revealed that the minimal self as a subject of conscious experience stands in a more difficult relation to the self as an embodied being in the world than usually thought. Going beyond interpretations that allege that the difference can easily be resolved, the project showed that it is already present in the dual directedness of consciousness. Furthermore, new light was thrown on Husserl’s late account of the confusions that stand in the way of a clear understanding of consciousness. Contrary to the prevailing interpretations, it was explained that to gain a clearer understanding of the self as a subject of experience, it is insufficient to refute reductive naturalism, and that a clear account of the relation between the self and the world is also required.
The results were applied to psychopathological phenomena. Since the minimal self is so fundamental to consciousness, it cannot completely disappear even in disturbed conscious experience. It has been argued that in psychopathological illness it can become “fragile,” however. Employing the concept of the minimal self as elaborated in the project, the prediction was made that self-disturbances should go hand in hand with disturbances of the experience of the intersubjective world and time, which was used to explain core observations in studies of schizophrenia.
In addition, the project led to an application to the question in how far technology can replicate or simulate human cognition. It showed that it is insufficient to think of cognition in terms of calculation, and that cognition rather requires a conscious subject. On the one hand, this is relevant for the development of future technology that processes and potentially “understands” meaning, while on the other it is relevant for debates of public interest concerning the possibilities of artificial intelligence, which is having an increasing impact on society and economy.
The project has further potential impacts on other issues of public interest. Understanding the most basic sense of the self is fundamental to questions such as the relation between ourselves as conscious beings and other humans, animals, and nature, the potentials of agency and freedom, and the possibilities of understanding others not only by finding oneself in the other but also by respecting others as genuinely different conscious beings.