22. The system of claim 21 , wherein the processor is further configured to: when the experience range is zero: set the term of experience to zero; and when the experience range is greater than zero: determine a start time for the experience range; determine an end time for the experience range; compute a time difference between the start time and the end time; and set the term of experience to the time difference, wherein the term of experience is rounded down to a unit of time.
22. The system of claim 21 , wherein the processor is further configured to: when the experience range is zero: set the term of experience to zero; and when the experience range is greater than zero: determine a start time for the experience range; determine an end time for the experience range; compute a time difference between the start time and the end time; and set the term of experience to the time difference, wherein the term of experience is rounded down to a unit of time. 25. The system of claim 22 , wherein the unit of time is not an integer.