In contradistinction to other events a duration will be called infinite and the other events are finite[10].

In our knowledge of a duration we distinguish (i) certain included events which are particularly discriminated as to their peculiar individualities, and (ii) the remaining included events which are only known as necessarily in being by reason of their relations to the discriminated events and to the whole duration.

The duration as a whole is signified[11] by that quality of relatedness (in respect to extension) possessed by the part which is immediately under observation; namely, by the fact that there is essentially a beyond to whatever is observed.

I mean by this that every event is known as being related to other events which it does not include.

This fact, that every event is known as possessing the quality of exclusion, shows that exclusion is as positive a relation as inclusion.