"Denis G." wrote in message
...

Regarding "enthropy", applying laws of the physical sciences to those
involving human activity (economics) is fraught with problems.

Thermodynamics is a surprisingly good descriptor of statistical group
behavior, phenomena such as activation energy and local minima compare
well, though I don't claim it has predictive power or memory elements
like some do:
http://en.wikipedia.org/wiki/Elliott_wave_principle

It's not too different from the mathematical energy-flow-based science
of Ecology.
http://en.wikipedia.org/wiki/Theoretical_ecology

jsw