 Instead, when one analyzes a physical object theoretically by looking at its component parts, one has to decide the level of granularity at which one wishes to analyze the object. For example, if the object we are analyzing is a chunk of iron, and we are studying magnetism, it may be sufficient to analyze the iron by treating its magnetic domains as fundamental constituents. However, a magnetic domain is a chunk of iron that contains many, many atoms. For other purposes, we may elect to analyze the sample of iron all the way down to the atomic level. Of course, the atoms themselves have parts. So, for yet different purposes, we may elect to analyze the sample of iron at the sub-atomic level of quantum objects. 