joke of modeling

When Prof Pandit of UDCT visited Dr Reddy's and we all attended his lecture at that time he told us this joke of modeling....

A professors asks his student to model the equations giving equation of motion of air across a camel.........

the student starts with ...

" let the camel be a sphere "

So you see that the modeling depends on how brilliantly you describe the system and how brilliantly you simplify it...This is the simplicity of modeling....