when one assumes that when one event follows another in time, that the first event causes the second to occur,he or she may relying, on what?

causation or reverse chronological order
I really do not know

http://en.wikipedia.org/wiki/Correlation_does_not_imply_causation

When one assumes that when one event follows another in time, and believes that the first event caused the second event to occur, they are relying on the concept of causation. Causation is the relationship between cause and effect, where one event (the cause) leads to the occurrence of another event (the effect).

On the other hand, reverse chronological order refers to the arrangement of events in a sequence from the latest to the earliest. It is a way of organizing information or presenting events, but it is not specifically related to the concept of causation.

Therefore, in this case, the assumption of one event causing another would be based on causation, not reverse chronological order.