1.   Do regions in phase space tend to spread with time or do they not?

2.   First, we should bear in mind what a single point Q of phase space actually represents.

3.   However, having survived our encounter with phase space, we should have no trouble with a mere four dimensions!

4.   Let us see how physical determinism is to be interpreted in terms of phase space.

5.   This spreading effect in phase space has another remarkable implication.

6.   Thus, the trick is not even to try even in the case of the phase space for a single particle.