Models and explanation

As I have said many times, the following, this time which was said by Sergei Maslov, is my credo in doing science:

Even more important than tools, theoretical physics has taught me about the power of simple models in revealing the essence of complex phenomena. Simple models are indispensable if one wants not to just reproduce the complexity of a system (e.g. by detailed computer simulations) but to truly understand it.

In my opinion, no comprehension can be achieved without simple models, despite how accurate a simulation may be. Because understanding is not simply about accuracy. More, it is about how to establish a clear connection between one's own already existing experience (including his knowledge) and the phenomena under consideration. Only when this connection can be built in light of his experience can he be satisfied in understanding. This process of building connection is actually a process of constructing models based on what he knows and reasoning with his model.

P.S., Maslov is doing research in systems biology and complex networks.