What would Dewey do? US Librarians grappling with the Internet

I thought this “NYT” piece would be about classification systems, but in fact it’s about the problems librarians face when people use library computers to view sexually explicit material. Makes you wonder if the ‘shame threshold’ is reducing. I remember once using a computer in a Washington hotel lobby to read my email via a browser, and then looking at the ‘history’ cache of sites explored by previous users of the same machine. Every single site on the list was an ‘adult’ one. What does this tell us about human nature?