ABSTRACT
The division in human concepts between objects and events is very obvious. Events and objects are different ontological kinds. Objects have a prominent spatial extent: They generally do not change rapidly over time but instead are enduring aspects of the physical landscape. They may undergo developmental changes (as when children grow up), but these changes operate slowly. Even concepts with aspects that change rapidly, like a flame, tend to refer to stable aspects of an object like its general color, shape, and size rather than to individual tongues of flame that change rapidly. In contrast, events have a prominent temporal extent: They track the movements and interactions of different objects over some specified time. For example, the event of going on a date involves relationships between two people and a location, as well as between other objects like a means of transportation.
