Time

Here we address notions of time familiar to most people as opposed to the philosophical nature of time.

For instance:

• Jimi Hendrix recorded albums between the mid 1960's and 1970.
• Jimi Hendrix died in 1970.
• Beautiful People released an album based on samples of all of Hendrix's recorded music.
• We can easily infer that Beautiful People's album was released after 1970.

The most basic notion of time is occupied by events:

• Events occur during intervals -- continuous spaces of time.
• An interval has a start and end point and a duration (of time) between them.
• Intervals can be related to one another -- descriptions such as is-before, is-after, meets, is-met-by, starts, is-started-by, during, contains, ends, is-ended-by and equals.
• We can build a axioms with intervals to describe events in time.