A heuristic is a beautiful thing. A heuristic is answers that
   work but might not necessarily be perfect. There's always doubt
   and uncertainty. Also, They're practical. Seekers of ultimate
   truths tend to not like heuristics much - mathematics and
   science generally do not like heuristics, because there are
   always many answers to a given problem, some of which are
   illogical, irrational but somehow... work.

   The beautiful thing about heuristics is that they never die -
   they just go in and out of popularity. To say the Sun revolves
   around the Earth is a heuristic. It may be scientifically
   inaccurate but to this day, it's how we describe the motion of
   the Sun. It works. ''Sunrise / Sunset''.

   Proverbs, rules of thumb, all fall into this category of ''get
   it done''. There are often long term problems that come from
   depending on them for too long - but life is short and sometimes
   we just don't have the time to perfect everything before acting.