It deals directly with spirit beings and magick. Spirit beings appear in all shapes and sizes in every culture from ghosts to nature spirits. Magick is a process in which the life-force of nature can be harnessed for a predetermined effect in the material world. Internal Gnosis has to do with the bio-energy which may be tapped with the human mind through higher consciousness and psychic abilities. Gnosis holds the key to human potential, but it has been repressed of late.
Philosophy has more to do with what is done with the knowledge than the actual collection of data.
Reason and logic are applied to Knowledge to make sense of the world in an orderly fashion. The world is subjected to the rationality of the human mind through careful contemplation. The efforts of exploration and investigation are well documented, either orally or written, in order for others to follow. These detectives expect to be followed by others who may doubt their claims, and they make decisions by consensus. Modern Science has dominated this greater paradigm for the last 500 years, as well as dominating Knowledge, itself.