Communication tools that people use heavily enough to care about acquire a context beyond just "Who I can communicate with". As the recipient, for the majority of my routine communications I get information from medium > sender > content, even though all ways of reaching me just make my phone jingle.
The series of decisions that results in me calling someone is so radically different than the one that results in IMing them that I'd never find it useful to start with a person and then decide to IM or call.
I'm about as often in the task-oriented position of thinking "I should call someone" or "I wonder who's awake on jabber" as the person-oriented position anyway.
The series of decisions that results in me calling someone is so radically different than the one that results in IMing them that I'd never find it useful to start with a person and then decide to IM or call.
I'm about as often in the task-oriented position of thinking "I should call someone" or "I wonder who's awake on jabber" as the person-oriented position anyway.
tl;dr: The medium is the message