It passes my understanding why disciplines who know damn well their object of study is a Chaotic System routinely ignore that fact when creating their Models.  Further, various subsidary parts of these Models are incorporated incorrectly as well, Migeru's example of glaciers being essentially viscous fluids is a case in point.

I'm sure it's all great fun to spend one's time creating bogus Models, crank the math around, and then publish papers and reports saying how wonderful the modelers are.  However, when the object of study is a dire problem - such as Global Climate Change - I submit this silliness is completely irresponsible.  

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre