Full Idea
As long as the concept of knowledge closely connects the justification component and the truth component but permits some degree of independence between them, justified true belief will never be sufficient for knowledge.
Gist of Idea
Gettier problems are always possible if justification and truth are not closely linked
Source
Linda Trinkaus Zagzebski (Virtues of the Mind [1996], III 3.1)
Book Reference
Zagzebski,Linda: 'Virtues of the Mind' [CUP 1996], p.289
A Reaction
Out of context this sounds like an advertisement for externalism. Or maybe it just says we have to live with Gettier threats. Zagzebski has other strategies.