navigation between pages, or if one wishes super hard to be SPA JS-y, `addEventListener` and `history.pushState`, although that wasn't what I meant when I made reference to the 90s -- the PNGs used by the slide deck exist as resources on the server, so one does not need JS to view them, even in an _o_rdered _l_ist of elements of <img>

I'm not being "you kids get off my lawn" as much as I don't follow how rolling your own opaque and obviously user hostile custom navigation framework-whatever enhances the message the author is trying to convey about how "shell is hard"