Rather it is a continuous process of evaluation, reevaluation, refinement, and development. Official reevaluation began after the reinstatement of direct presidential elections in 1987. The essence of Shackle's radical reevaluation of economic theory was primarily epistemic. This may lead to a reevaluation of FDA procedures and better oversight. Achieving attainment status makes a request for reevaluation possible. Critical reevaluation of the film continues to be positive. Some modern scholars advocate a reevaluation of ancient evidence about helots. This change coincided with the reevaluation of murals in the liturgy. The employer is required to allow an improvement period before reevaluation. The book's fiftieth anniversary in 2007 prompted a reevaluation of the book from some critics. The film initially received mixed reviews, but outstanding box-office returns prompted critical reevaluation. The charismatic movement forced a reevaluation of what it was to be Pentecostal. A reevaluation of the approach was called for. This has exposed the implicit rules of courtesy and opened them to reevaluation. The unexpectedly great difficulty in defeating the Boers forced a reevaluation of British policy.