Hypothetically, if governments wordwide just suddenly became authoritarian and deleted all records of history, you and some survivors escape to a remote area outside of government control, they all can’t remember much from history (either didn’t pay attwntion in class, or suffers memory loss from the governemtn attacks) and so you are designated as this community’s official historian. How much can you remember? What’s gonna be the official narrative of your little rebel community?
This is why books are so important. Real, physical, paper books. The scenario you are proposing is precisely what Fahrenheit 451 is about.
How do I print the 100GB English Wikipedia?
How do I even transport something that big without the authoritarian governmwnt noticing?
the catch is that the Fahrenheit 451 scenario nowadays just require a storage device to fail… very ecological, Greta must approve it