 The second of the main ways of thinking about time is the Dynamic Theory of Time. The guiding thought behind this way of thinking is that time is very different from space. Here are six ways in which this thought is typically spelled out. (Note: The particular combination of these six theses is a natural and popular combination of related claims. But, like the Static Theory, it is not inevitable. It is also possible to mix and match from among the tenets of the Dynamic Theory and the Static Theory.)