Needs not in York 1. Incorporation of legacy systems 7. Emphasize the importance of models 8. Real world slide from York 9. Decision making under uncertainity - evidential reasoning.
Systems are remarkably reliable and safe, despite our inability to assess.
Assuring the system retains properties during the evolution process. Functional, not physical, etc. Setting extreme quality goals that are not achievable causes problems with the system. Emphasis will be placed on techniques that enable integration, composability, reuse, and cost prediction. Attributes include availability, reliability, safety, confidentiality, integrity, and maintainability.