Roles become cards ?

I agree with Dave Kearns when he says

Good post today ("No User Context Decisions in your Enterprise?") from Pam Dingle ...

Situations #1 and #4 in Pam's post are theoretically resolved using a role based access control approach. This leads me to the following two questions:

1. Does role equal context ?
2. Do (virtual) cards become a convenient means for activating one's role ?
   

Answering my own questions, I would say "yes" for both situations.