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

Any defense of common sense must allow that it is revisable.

Normal adults can doodle, amble, and drift with no need to assess risk, since there is normally no risk at all. Jazz improvisation seems less subject to standards of risk than surgery, and less than much formal athletic performance, as in a tennis match.

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

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.

It is bad to want something that not even God could attain, especially when the impossibility becomes obvious.

Lowered reliability obviously yields a lesser competence. But lowered breadth does so as well.