[cap-talk] What are caps good for? "Encapsulation"? POLAvs.confinement

[David Chizmadia (JHU)]

----- Original Message ----- 
From: "Jonathan S. Shapiro"
> On Fri, 2004-05-07 at 23:20, David Chizmadia (JHU) wrote:
> > As Shap explained
> > confinement to me in the context of EROS, it is actually
> > about ensuring that an agent can only interact with the
> > outside world through its specified interfaces - *AND THAT
> > THE OUTSIDE WORLD CAN ONLY INTERACT WITH THE AGENT THROUGH
> > THOSE SAME INTERFACES*.
>
> Shap didn't explain any such thing. Confinement only
> concerns *outward* communication. It makes no guarantees
> or claims about the whether the non-confined world is
> well behaved.

    So what principle/mechanism provides the constraints that
allow EROS to make its IP protection claim?

-DMC