Treat it like you're dealing with some vendor's salesperson. You have to bring your own source of truth, like the interfaces that let you "talk to your PDFs".

Treat it like you're dealing with some vendor's salesperson. You have to bring your own source of truth, like the interfaces that let you "talk to your PDFs". Prep it with data you know to be true, then start your discussion. If you show up unprepared and let it tell you what's real, it will bullshit you in its favor.