Pragmatics: Codifying Policies
Webís ëtrust problemsí are too varied to compile in
- PICS filtering, applet authorization; soon payment method selection and privacy policy negotiation
Externalized policy evaluators
- More flexible to put in a general-purpose TM Engine
- Possible to compose policies written in several languages and styles
- Example: REFEREE can load in policy interpreters as well as policies, rather than PICSRulz alone