Why should you express system events at the level of intent

Why should you express system events “at the level of intent rather than in terms of the physical input medium or interface widget”? Your answer should include an example of a good and bad description, but don’t use the examples in Larman’s text.

Solution

System events (and their associated system operations) should be expressed at the level of intent rather than in terms of the physical input medium or interface widget level.

It also improves clarity to start the name of a system event with a verb Thus \"enter item\" is better than \"scan\" (that is, laser scan) because it captures the intent of the operation while remaining abstract and noncommittal with respect to design choices about what interface is used to capture the system event.

For example “enterItem” is better than “scan” as it captures the intent of operation rather than what interface is used to capture the system event (design choice).