The Swift-Hohenberg Equation Requires Non-Local Modifications to Model   Spatial Pattern Evolution of Physical Problems
  I argue that ``good'' mathematical models of spatio-temporal dynamics in two-dimensions require non-local operators in the nonlinear terms. Consequently, the often used Swift-Hohenberg equation requires modification as it is purely local. My aim here is to provoke more critical examination of the rationale for using the Swift-Hohenberg equations as a reliable model of the spatial pattern evolution in specific physical systems. 
A.J. Roberts (University of Southern Queensland)