Generally speaking, internal control is a process. It is a dynamic $$process$.$ Could you use several sentences to explain what the $$dynamic process$$ mean? $$ Question $2$ for video $2$: The instructors explained that separation of duties is a critical internal control activity. He emphasized that the four types of functional responsibilities should be performed by different persons: $(1)$ authorization, $(2)$record$,(3)$ custody, and $(4)$periodic reconciliation. Could you please use an example to demonstrate how the separation of duties of these four responsibilities can safeguard financial information quality? $$ Question$3$ for video $3$: The instructor introduced the five$-$step analytic procedure: $(1)$ develop an expectation, $(2)$ define a significant difference, $(3)$ compare expectation with the recorded amount, $(4)$ investigate significant differences, and $(5)$ document each of the preceding steps. What is the top$-$down approach to understanding the client$$s business nature and risk peculiarity? $$