  Econophysics is an approach to quantitative economy using ideas, models,
conceptual and computational methods of statistical physics. In recent years
many of physical theories like theory of turbulence, scaling, random matrix
theory or renormalization group were successfully applied to economy giving a
boost to modern computational techniques of data analysis, risk management,
artificial markets, macro-economy, {\it etc.} Econophysics became a regular
discipline covering a large spectrum of problems of modern economy. It is
impossible to review the whole field in a short paper. Here we shall instead
attempt to give a flavor of how econophysics approaches economical problems by
discussing one particular issue as an example: the emergence and consequences
of large scale regularities, which in particular occur in the presence of fat
tails in probability distributions in macro-economy and quantitative finance.
