Human produce discourses on the world: mythologies, religions, mysticisms, philosophies, science. The majority of those discourses are transcendent in nature. Following a conceptual clarification based on the notions of reflection and general discourse, philosophy appears as a transcendent general discourse among others; hence the failure of the latter to account for the world and science; hence the need for a non-transcendent general discourse, a properly scientific general discourse, a metascience. In light of these redefined boundaries, it will be proposed to base metascience on an interpretation of Mario Bunge’s work. This interpretation is based on a set of general postulates that Mario Bunge adheres to and taken for granted by scientists. It is proposed that supporting such a set of postulates without problematizing them in the manner of the philosophers, makes Bunge’s thinking no longer philosophical.