In a message dated 1/5/00 10:38:09 AM Eastern Standard Time,
gmbulley@BULLEY-HEWLETT.COM writes:

<<
 The performance, features, and maintenance are self-explanatory for simple
 devices like shovels, matches, and spoons. A vehicle, if one wishes for
 safety, convenience, and long-lasting reliability demands some modicum of
 sagacity on the part of the owner to understand the needs and
 characteristics of the machinery involved. Cars are complicated, but the
 manufacturer helps you understand what you need to know (like the normalcy
 of a flashing oil light) in the manual.
  >>

sagacity,  quickness or acuteness of discernment or penetration and soundness
of judgement; penetrating intelligence.
just thought i'd save the those on the list with a limited vocabulary like
mine a few a trip to the dictionary.
oh and i agree well said Matthew.
-dieter