Electronic display readability in all display operating environments is the final goal of display design. There are a number of operating environment and display performance characteristics that influence readability. The effects of the performance characteristics vary according to the environment. No one display technology or component can give a complete solution to readability requirements without attention to all of these variables. It is strongly recommended that a display designer be included during the early stages of the cockpit or flight deck design process. Otherwise, the display requirements may not reflect the real needs of the user's environment.