1. What are some of the characteristics of a human-made or engineered system that distinguish it from a natural system?

2. Identify and describe a natural system of your choice that has been human-modified and identify what distinguishes it from a human-made system.

3.What does system life-cycle thinking add to engineering as currently practiced? What are the expected benefits to be gained from this thinking?

4. Various phases of the product life cycle exists. Describe some of the interfaces and interactions between the life cycles of the system and the product life cycle

5. What is the full meaning of the phrase designing for the life cycle