Modeling Principles for Developers and Users

"Everything should be made as simple as possible,
 but not any simpler."
 - Albert Einstein

"A model of a physical device is a mahtematical
 entity with precise laws relating its variables.
 The model is always distinct from the physical
 device, though its behavior ordinarily approximates
 that of the physical device represented. Thus a
 model is never strictly equivalent to the device
 it represents."
 - John Linvill
Received on Thu Jul 25 15:56:15 1996