modern systems analysis and design 8th edition two Q

Must use your own word no google or chegg.

1. Why is it important to use systems analysis and design methodologies when building a system? Why not just build the system in whatever way seems to be “quick and easy?” What value is provided by using an “engineering” approach?

Explain how object-oriented analysis and design differs from the traditional approach. Why isn’t RUP (Figure 1-14) represented as a cycle? Is that good or bad? Explain your response. 

(Figure 1-14) as file see that first