ironment
and organism and the further detection of anatomical structure within the
organism depend on a direct product decomposition of the space into
relatively independent components whose interactions can be treated
secondarily.  But the direct product is a comparatively advanced
stage of decomposition and not to be expected in every case.

This point draws the chase back through the briar patch of that earlier theory
of complexity, the &quot;prime decomposition&quot; or the &quot;group complexity&quot; 