 Another move in a similar spirit to K-Reliabilism replaces the justification clause in the JTB theory with a condition requiring a causal connection between the belief and the fact  believed;[24]  this is the approach of Goldman (1967,  1976).[25]  Goldman’s own causal theory is a sophisticated one; we will not engage with its details here. See Goldman’s papers. Instead, consider a simplified causal theory of knowledge, which illustrates the main motivation behind causal theories.