As the creative adult needs to toy with ideas, the child, to form his ideas, needs toys--and plenty of leisure and scope to play with them as he likes, and not just the way adults think proper. This is why he must be given this freedom for his play to be successful and truly serve him well.
To be told that our child's behavior is "normal" offers little solace when our feelings are badly hurt, or when we worry that hisactions are harmful at the moment or may be injurious to his future. It does not help me as a parent nor lessen my worries when my child drives carelessly, even dangerously, if I am told that this is "normal" behavior for children of his age. I'd much prefer him to deviate from the norm and be a cautious driver!
Most advice on child-rearing is sought in the hope that it will confirm our prior convictions. If the parent had wished to proceedin a certain way but was made insecure by opposing opinions of neighbors, friends, or relatives, then it gives him great comfort to find his ideas seconded by an expert.