资料来源 : Free On-Line Dictionary of Computing

aeroplane rule
     
         "Complexity increases the possibility of failure;
        a twin-engine aeroplane has twice as many engine problems as a
        single-engine aeroplane."
     
        By analogy, in both software and electronics, the implication
        is that simplicity increases robustness and that the right way
        to build reliable systems is to put all your eggs in one
        basket, after making sure that you've built a really *good*
        basket.
     
        While simplicity is a useful design goal, and twin-engine
        aeroplanes do have twice as many engine problems, the analogy
        is almost entirely bogus.  Commercial passenger aircraft are
        required to have at least two engines (on different wings or
        nacelles) so that the aeroplane can land safely if one engine
        fails.  As Albert Einstein said, "Everything should be made as
        simple as possible, but not simpler".
     
        See also {KISS Principle}.
     
        (1999-03-22)