到此为止，我已经介绍了Python只处理对象类型，然而示例中好像并没有什么对象。
To this point, I've told you that Python deals only with object types, yet the examples don't really seem to have any objects.
基本上，当db4o看到新类型的字段时，就会在磁盘上创建一个新字段，该字段有相同的名称，但是具有新的类型，就好像它是添加到类中的另一个新字段一样。
Basically, when db4o sees the field of the new type, it creates a new field on disk with the same name but a new type, just as if it were any other new field added to the class.
这两个类型看起来好像完全不相干，但将它们统一在一起的，就是故事中强烈的人物性格特征，如果没有这一特征，此类故事将不复存在。
These two types of stories seem polar opposites, but what holds them together and defines them is the strong central character that creates the reason for the story to be told.
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