"epistemological nihilism", simply denies the possibility of knowledge of truth. Previous epistemological philosophies failed in obtaining truth because all possible vessels for obtaining truth cannot be proven truthful themselves. Empiricism fails because one must assume that their senses depict an accurate portrayal of their secular existence (or that a secular world even exists, for that matter), which fuels their observations; sensations also depend on senses to provide the observer with the source of the sensation. Rationalism fails because without a secular experience, real or imaginary, one's lack of experience prevents them from being able to reason. ie, they cannot reason without the use of empirical devices. Therefore, rationalism cannot gain one knowledge without empirical methods, which are already based on assumptions (faith) of senses; assumptions cannot lead to the knowledge of truth. Intuitionalism fails because it also has the potential to utilize empirical (and rational) devices; It allows one to alter their truth based on new experiences. This leaves room for "error" and keeps "truth" from being absolute or even certain
Nihilist: Nothing can be certain.
Person: You can't prove that.
Nihilist: You're catching on.