They preserved snow days because, said one superintendent, “kids should be kids.”The truth is, children need snow days now more than ever. Psychologists have long argued that unstructured play — enabled by snow days — is critical to healthy development. One or two snow days shouldn’t be a problem, right? It poses a huge problem for the NYC school bureaucracy. Add it all up, and here is the key takeaway:The bureaucracy will always do what is best for the bureaucracy — to hell with the NYC kids, who will never experience the raw, unplanned joy of a glorious snow day.