Much of the debate in epistemology centers on four areas : -LRB- 1 -RRB- the philosophical analysis of the nature of knowledge and how it relates to such concepts as truth , belief , and justification , -LRB- 2 -RRB- various problems of skepticism , -LRB- 3 -RRB- the sources and scope of knowledge and justified belief , and -LRB- 4 -RRB- the criteria for knowledge and justification .
Epistemology has nothing to do with the study of the nature of knowledge .