If 'All were convinced that anything so compelling and engrossing in the life of the young child must be profoundly significant.' is true, does it logically mean that 'Everyone accepted that make-believe was vital to the life of a young child.' also is?
All were convinced that anything so compelling and engrossing in the life of the young child must be profoundly significant.###Everyone accepted that make-believe was vital to the life of a young child.