as well as the lists of data sources wherein the lists take into consideration the disabled state of the pool evaluator a first repercussion of the disabled state of the pool evaluator is the exclusion of the latter from the lists of data sources when establishing the list of data sources 59 for the display the main verifies whether the corresponding sources are enabled by accessing their state flag the selector random generator and genetic generator are enabled and are consequently included in the list 59 however the pool evaluator is disabled and is therefore not included as a result average scores are not retrieved by the display and may not be presented within the view 5 as illustrated in fig1 a second lesser repercussion relates to the list of data sources of the pool evaluator prior to establishing such a list the pool verifies whether the pool evaluator is disabled by accessing its state flag since the pool evaluator is disabled the pool does not establish the list in another embodiment the programmer prior to executing the program invokes a code generation engine which examines a single list of all objects comprised in the program wherein the list specifies which of those objects are disabled subsequently the engine comments out all lines of code implementing a call to or a data flow involving one of the disabled objects once all corresponding lines have been commented out.