ABSTRACT
Problems in science are often too complex for us to have a clear grasp of all the details. If, nevertheless, we try to keep on this level of detail it will be difficult for the theory to provide a sound guide on what experiments to do, or how to interpret them when performed. Better to accept the limitations of the human brain in dealing with issues on so large a scale and simplify the problem into the form of a model. The skill lies in making a model that is neither so simple that it is a poor interpretation of the real thing, nor too complex that it is too detailed for practical use. Remember the primary aim of science: to unite theory and experiment.
