terminology: capabilities

introduction.tex

@@ -76,7 +76,14 @@ For simplicity we focus entirely on reusable resources in this paper.
 The connection between tasks and resources are made with \emph{capabilities}.
 Resources have one or more capabilities, and tasks have one or more \emph{capability requirements}.
 
+For example, Bob can have the capabilities Operator, Medic, and Commander.
+The task Perform rescue can require a Transport and an Operator.
+
+From a technical standpoint, capabilities are just labels that the scheduler uses to match resources and tasks.
+Because the scheduler does not care what capabilities actually stand for, they can be used in different ways.
+For example, capabilities can represent professions, completed trainings, military ranks, or identify individual resources.
+
+
 In the scheduling literature capabilities are often called \emph{skills}.
-We chose not to use this word, because it suggests that resources can only be people.
-We want to emphasize that resources can be anything from machines to people to tools, so we chose a more general term.
-\todo{use consistently}
+We chose to avoid this word because it suggests that resources are people.
+We want to emphasize that resources can be anything including machines, people, and tools, so we chose a more general term.