Another memorable - and scarily relevant - example was Disney changing the content of some purchased video content. I think it was a Star Wars spinoff, where a user noticed something amiss and the fix was retroactively edited into already-purchased content. That is _exactly_ the type of rewriting the past that 1984 warned us about.

This could be - or is - an ultimate form of gaslighting. If it's not on your hard drive, you can never be sure that what you're seeing today is what you saw yesteryear.

After I downloaded Fahrenheit 451 my hard drive caught fire.