  This new long version of my 1983 paper suggests the goals you might have for
your system -- Simple, Timely, Efficient, Adaptable, Dependable, Yummy (STEADY)
-- and techniques for achieving them -- Approximate, Incremental, Divide &
Conquer (AID). It also gives some principles for system design that are more
than just hints, and many examples of how to apply the ideas.
