"An expert guess as to why an underfloor pump has failed is academic; knowing what to do about it is what counts. Indeed, preoccupation with detail can divert attention from the overall picture with terrible consequences. When trouble develops, keeping they airplane flying right side up at a safe speed and altitude is the prime concern. Dealing with a problem is of secondary importance. Many the perfectly flyable airplane that crashed while its crew fiddled with switches and recited checklists."
--Len Morgan