When I accept someone's testimony, I am thus only a small part of the full seat of epistemic competence, which might include many others in a long chain. My own contribution might then be slight, just through the perceptual and linguistic competence involved in knowing what someone is saying or writing, etc.

A successful account enables us to understand human knowledge in general.

When you dream, your perceptual (and other) competence is affected. You are then unable to get it right competently with the beliefs in your dream.

Success is better than failure; an attempt is a better attempt, it is better as an attempt, if competent than if incompetent; and it is better to succeed through competence - aptly - than through sheer luck.

There isn't a formal definition of success.

A hunter archer can also be out to shock by taking crazy shots. What makes his shots "crazy" is set by excessive risk, judged by hunting-archery standards, which would tend to draw agreement from knowledgeable observers.

Flourishing is properly the main human end, and flourishing is activity of soul that succeeds in accord with virtue.