"There is a close and reciprocal relationship between planning and controlling" .explain the statement...???? 4marks

planning nd controlling are the two twins of management . it is also interlinked and interrelated with each other.
it can b explaing in two types 
1) planning is meaningless widout controlling - as planning can't b  worked if the managers have no control over them. 
2) controlling is blind widout planning- as if there is no planning then controlling will b implemented on what