# EVPI Takeoff Expected value of perfect information (EVPI) Count-based takeoff speed increases with count. *** Optimizing the takeoff process means: * *Minimizing* the need for information outside of drawings * *Maximizing* organizational consistency *** Recent events have complicated my philosophy above. It appears that similar efforts have already been made here, their success being a matter of perspective. ## Naming Conventions (Use Case vs. Description) Naming by use case is intuitive for those without estimating or field experience, but has the side effect that those accustomed to the names will inevitably treat them as descriptive.