nSimple as
possible with non-linear
terms left in.

nAperiodic –
doesn’t repeat

The Lorenz
Attractor

Edward
Lorenz – US mathematician, weather forecaster for US Army Air coprs during
WWI. Made mathematical models of weather systems, noticed ‘unpredicatable
behaviour.

wrote a
set of equations for convection to explain weather pattern. He made the
equations as simple as possible, but left in non-linear terms.

Certain
non-linear systems that show apparently random motion show a strange form of
order when plotted in a suitable phase space - the motion never repeats
itself, but is confined to a fixed region of space - a strange
attractor