ujm, I do not disagree, but even that is not absolute and depends on circumstances and people involved. Information may be/must be shared for shidduch and business purposes; books might be/should be read by those who need to be prepared in their professional/social life.
In the house of Rabban Gamliel, some studied Greek books, of course not as much as Torah and Torah in the morning and Greek culture after that, right?
Also, how would they mark up money bags in beit hamidash – alef/beit/gimel or alfa/beta/gamma?!