1. Some key elements of production systems are listed in the textbook. Explain briefly how lean systems differ from traditional production systems for each of those elements. 2. What problems not generally found in manufacturing do service systems present in terms of scheduling the use of resources? 3. Why do waiting lines form even though a service system is underloaded? Give an example of when this may happen from your personal or professional experience. 4. From the Week 7 Graphics Lecture with Speaker Notes - What are the lead-time elements in any process? Which could be considered "non-value added