MA.8:10 - Architectural Rationale
The method organizes flows around the population and time of the decision because acquisition and continuation do not concern identical future consequences. Resource modeling reveals when serving more customers changes capacity needs and payments.
A simple cohort table is adequate for a bounded scenario. A richer purchasing, retention or product-life model is justified when its distinctions can change the use and can be supported. The account supplies financial inputs without replacing valuation or financing methods.