When I was in Yeshiva, the boys who weren't learning would read books. Even boys who never read books before in their leisure time, would read. This is because besides learning, there was nothing else to do but read. Not the ideal but at least on some level the mind and intellect were being used.
Things have changed. I NEVER see anybody reading anymore. EVERYONE has an iphone and those who aren't learning are busy with that. What a crazy ירידת הדורות. The end of the human mind.
Rabbi Lamm wrote a celebrated book called Torah and Madda. For all to many in his constituency, it is neither Torah nor Madda.
To borrow a phrase from the gemara - על דא ודאי קבכינא.
Parents BEWARE.
