As an engineer, I am very analytical and linear in my thought process. This is natural and almost expected as I deal with equations following specific procedures to arrive at design solutions. After all, there is no gray in engineering - it is either black or white.
There are several different types of retaining walls available today. From rigid concrete cantilever walls to small block (modular) retaining walls. The analysis for retaining walls can vary but the overall safety factors remain the same.