Fable 5's use of an A-B-C comparison sheet for fox v2 represents a structured approach to design iteration. Rather than presenting a single revised design Fable 5 offers three variants for ranking — a methodology borrowed from professional product design and user experience testing. Nervli as an external artist provides an independent ranking that avoids the creator's bias toward their own work. This three-variant approach increases the probability that the final design incorporates genuine improvement rather than mere change.