““Eventually (about eight percent of battery left), my computer makes a sound and a message pops up to alert me that the battery is very low. This is an example of signaling when an event is infrequent, but important. (I wish that Apple gave me the option of customizing when I want to be alerted, however. By the time I get the alert, the battery is really low. Then I run around panicked trying to find my plug or an outlet, or saving files.)””
