DEFINITION

Starting by the origin of Epistemology, it comes from the greek and it is divided in tow words:

1. Episteme: That minds or can be translated like "wisdom or science".
2. Logos: That minds "speech".

Epistemology studies the way of generate or get the wisdom of a science. Its principal function is justified the searching that can make it, probing or taking in main of the aspects that can be involved on this “investigation” for example social, cultural, economic, historic even psychologies aspects. 

In other aspects or author is like the science charge of the of the wisdom theory and in a philosophy definition got for principal objective the find the essence and the reason of the thinks.