<P> The Gettier problem , in the field of epistemology , is a landmark philosophical problem with our understanding of knowledge . Attributed to American philosopher Edmund Gettier , Gettier - type counterexamples ( called `` Gettier - cases '' ) challenged the long - held justified true belief ( or JTB ) account of knowledge . On the JTB account , knowledge is equivalent to justified true belief , and if all three conditions ( justification , truth , and belief ) are met of a given claim , then we have knowledge of that proposition . In his three - page 1963 paper , titled `` Is Justified True Belief Knowledge ? '' , Gettier showed , by means of two counterexamples , that there were cases where individuals had justified the true belief of a claim but still failed to know it . Thus , Gettier claimed to have shown that the JTB account was inadequate -- it could not account for all of the knowledge . The JTB account was first credited to Plato , though Plato argued against this very account of knowledge in the Theaetetus ( 210a ) . </P>
<P> The Gettier problem , in the field of epistemology , is a landmark philosophical problem with our understanding of knowledge . Attributed to American philosopher Edmund Gettier , Gettier - type counterexamples ( called `` Gettier - cases '' ) challenged the long - held justified true belief ( or JTB ) account of knowledge . On the JTB account , knowledge is equivalent to justified true belief , and if all three conditions ( justification , truth , and belief ) are met of a given claim , then we have knowledge of that proposition . In his three - page 1963 paper , titled `` Is Justified True Belief Knowledge ? '' , Gettier showed , by means of two counterexamples , that there were cases where individuals had justified the true belief of a claim but still failed to know it . Thus , Gettier claimed to have shown that the JTB account was inadequate -- it could not account for all of the knowledge . The JTB account was first credited to Plato , though Plato argued against this very account of knowledge in the Theaetetus ( 210a ) . </P>
who came up with the tripartite theory of knowledge
who came up with the tripartite theory of knowledge
Edmund Gettier
Edmund Gettier