The ability to do a task need not result in optimal performance. What else do you think is necessary?
Performance in an organizational set up is influenced by several factors in addition to ability of the person to perform the task well. These include availability of required resources and facilities for performing the task including support from others in the organization who provide some support or input, clarity on the work to be done, and motivation of person performing the task. To achieve optimum performance it is necessary to insure that all these resources and conditions are made available. Thus the organization must brief the people performing a task on the nature and objective of the task, and ensure that they have access to necessary resources. Also it is essential to establish effective team spirit and coordination procedures in the organization. Finally individuals in the organization must be motivated to put in their best effort in performance of the task.