Some years ago I read a small architecture book about Organic Structure of Cities in the old continent. It compared new structured cities with those evolved from very ancient dessigns. It concluded that those ancient had a more organically living society because of the number of classes that shared every day the same space. Their creativity was improved because their structure evolved by a constant need to do so. And didn't make isolated places for any specific function: the baker shared the university zone with the butcher and the bussiness man, etc.

I guess that the same could be thought about programming dessign. But in a structured way of thinking, you should only structure what is required. Always following mother nature's law of minimum effort.