is the "context" of a trust decision being captured sufficiently?

When we make a trust based decisions, we often think about it within a context. I.e. I know Bob, and Lucy, therefore I will trust John as an issuer. I think to move forward on this, we need to answer a few questions:

* what is the "context" of a trust decision and why does it matter?
* how would you model it?
* are the current specifications providing enough support to make context based decisions around trust?
* should the specifications support context based decisions around trust?

I would probably label this a discussion for now, to talk about at the next TE meeting.