Epistemology
The word "epistemology" is derived from the ancient Greek "epistēmē" meaning "knowledge" and the suffix "-logy", meaning "logical discourse" (derived from the Greek word "logos" meaning "discourse"). It is analogue to the German "Wissenschaftslehre" (literally, theory of science) which was introduced by philosophers Johann Fichte and Bernard Bolzano in the late 18th century. The word first appeared in English in 1847 as a translation of the German in New York's "Eclectic Magazine" review of a philosophical novel by German author Jean Paul:
Epistemocracy
Another use seems to be in relation to modern science or western technocracy: "...the social promotion and political em-powerment of a new class of experimental scientists ... what sociologists of science like Blumenberg call an epistemocracy." Again this is more or less opposite to Taleb's use. However it would be unfair to say that any of these have exactly caught on either. It remains a word used in an ad hoc manner.