When you and your avid reader son, do a quick run through Powells City of Books, and realize you should start weighing book purchases by weight in pounds rather than number of books.
Partly impacted by the fact that he visited the four cookbook rows.
Note also, one from effective Fedora marketing by @dilmandila@mograph.social - the last copy of Where Rivers Go to Die that Powells has on their bookshelf.