I think that part of it is that the thought process is closer to "I want to send an email to my friend Bob" than "To Bob I want to send an email". I realize th

I think that part of it is that the thought process is closer to "I want to send an email to my friend Bob" than "To Bob I want to send an email". I realize that sounds contrived, but I think activity/tool/app centric experiences are more closely tied to "solving a problem" and people centric experiences are more obscure/less obvious in what you can do. Perhaps the problem is that people think more about what they want to do than who they want to do it with.