Millar A (2011) Why Knowledge Matters. Aristotelian Society Supplementary Volume, 85 (1), pp. 63-81. https://doi.org/10.1111/j.1467-8349.2011.00196.x
An explanation is given of why it is in the nature of inquiry into whether or not p that its aim is fully achieved only if one comes to know that p or to know that not-p and, further, comes to know how one knows, either way. In the absence of the latter one is in no position to take the inquiry to be successfully completed or to vouch for the truth of the matter in hand. An upshot is that although knowledge matters because truth matters this should not be understood to mean that knowledge matters because true belief matters.
Aristotelian Society Supplementary Volume: Volume 85, Issue 1