Full Idea
It is very difficult to specify when an explanatory relation generates enough coherence to create justification.
Gist of Idea
It is very hard to show how much coherence is needed for justification
Source
Robert Audi (Epistemology: contemporary introduction [1998], VII p.193)
Book Reference
Audi,Robert: 'Epistemology: a contemporary introduction' [Routledge 1998], p.193
A Reaction
I take coherence to be the key concept in epistemology, and quite impossible to define. This is why the 'space of reasons' is a useful concept. It is a courtroom, in which each case is different.