Back there in the 18th century, Christian Wolff differentiated three types of ontological metaphysics, regarding the spirit, the world, and God. Later on, Wilhelm Dilthey divided two types of science: Human science and Natural science. Since then, we witness a great schism between what is considered to be, on the one hand, subjective and on the other – objective studies. The gap between Human and Natural sciences became bigger with the idea of falsifiability introduced by Karl Popper in the 20th century. In that picture, we could imagine that Social Sciences lay, somewhat, in the middle between the two already mentioned. The majority of the Social Sciences exploit the scientific methods borrowed from Natural Sciences (Antipositivism, or Interpretivism, is an exception), whereas Humanities mostly use critique, speculation, and comparative historical methodology.