Heterodoxy (or really, orthodoxy) wasn't really a thing in 79ad, and you're not likely to find much of it in the private library of a wealthy Roman's vacation home. The only forbidden work you're going to see from that era is stuff critical of the emperor.
That said, they had limited resources. This is very cool
Or of technology- steam power, mechanical computation (like the Antikythera mechanism, which is the only known example of such a thing until 1300 years later), mechanized production, mining techniques, etc
The exception though would be Greek literature. Greek literacy collapsed in the early medieval era and a large catalogue was probably just scrapped or discarded before even being collected in Monasteries. Herculaneum could represent a legitimate treasure trove in that regard.
And that's just one thing, who knows what else those old Greeks/Phoenicians/etc were kicking about.
What dodecahedra were for.
So we can just get ChatGPT to fill in the blanks.