for which no global optima exists. over-constrained problems

e.g. xomo

K.I.S.S. for business managers was a principle ignored by   Henri
Fayol who, in 1916, argued that managers should systematically
work thorugh all available data. In Fayol's model, managers
 work through all options to systematically plan, organize,
co-ordinate
     and control.

     Subsequent research was very negative to Fayol's conclusions
     and showed that K.I.S.S. for managers was essential.
      Mintzberg~ \cite{mintz75} studied in detail the actual behavior of managers
      and  found (e.g.)
\begin{smallitem}\item 56 U.S. foremen who
     averaged 583 activities in an eight-hour shift (one every 48 seconds).
    \item 160 British middle and top managers who
     worked for half an hour or more without interruption only once every
     two days. \end{smallitem}
Note tha these empirical results of actual managerial behavior
does
     not fit Fayol's model of managers as systematic planners.
     Mintzberg's managers must be making faster decisions using
     less data than Fayol's mythical managers. Clearly,
     Mintzberg's managers need a lot of K.I.S.S.

Mintzberg's results lends credence to Simon's theory of {\em
bounded rationality}~\cite{simon82}. Simon rebelled against
traditional theories of perfect decision making where (e.g.)
agents considered all options by (e.g.) assigning probabilities to
all possibilities. This can't be a model of human decision making,
argued Simon, since in the real world, human agents have \bi \item
limited time and computational ability; \item
 limited computational ability (or
limited time for computation); \item limited knowledge about
decision alternatives;\item uncertainty about possible outcomes of
decisions\item uncertainty about pay-offs; \item no more than a
partial ordering of preferences; \item limited information about
probabilities of outcomes. \ei Simon's proposed alternate model
was very K.I.S.S. In Simon's model,  agents search for decisions
that accedes some {\em aspiration level} of what they are willing
to accept as a satisfactory outcome. In the case of resource
limitation (e.g. an impending deadline when a decision must be
made), the search may be incremental and may stop as soon as any
option is found. Over time the aspiration level may be raised or
lowered depending upon outcome of previous searches. Simon's point
was that real agents don’t need to make optimal decisions. Rather,
they need to make just enough decisions that are just good enough.
In Simon's terminology, such decisions are {\em satisficing}.

This article offers TAR2 as a method for finding minimal, hence
K.I.S.S. satisficying solutions.