Demarcation problem
In philosophy of science and epistemology, the demarcation problem is the question of how to distinguish between science and non-science.[1] It also examines the boundaries between science, pseudoscience and other products of human activity, like art and literature and beliefs.[2][3] The debate continues after more than two millennia of dialogue among philosophers of science and scientists in various fields.[4][5] The debate has consequences for what can be termed "scientific" in topics such as education and public policy.[6]: 26, 35 
https://en.wikipedia.org/wiki/Demarcation_problem