6. The method of claim 1 , further comprising: obtaining signals from the at least one user by the computing device; and maintaining by the computing device, a user profile to supply default information or bindings; and wherein the model of the user includes at least one perspective comprising: expert, typical-user, clustered-user, personal-user, session, or focus; and wherein defaults are maintained with respect to at least one perspective comprising expert, typical-user, clustered-user, personal-user, session, or focus.
1. A method for performing at least one task using execution of a software component out of a plurality of software components on a computing device for at least one user involving at least one domain, the method comprising: representing by the computing device at least one user goal with respect to the domain, the goal represented being independent of tasks which the plurality of software components can perform; representing by the computing device at least one task which can be accomplished by the software component in the domain independent of stated user goals; establishing by the computing device an association between at least one linguistic or pragmatic item and the at least one user goal, the at least one linguistic or pragmatic item having an association with the task; inferring by the computing device using the associations that the software component which can accomplish the at least one task is appropriate out of the plurality of software components for achieving the at least one user goal; and performing the at least one task for the user by the computing device executing the software component.