[throwaway2037]

Nice link! I never saw that page before. This quote surprised me:

    it should be noted that the amount of text added to Wikipedia articles every year has been constant since 2006, at roughly 1 gigabyte of (compressed) text added per year.

[tyre]

Yes, Wikipedia is surprisingly small. You can fit the whole thing on an iPad and access all of it without internet. Plenty of rabbit holes to fill even the longest airplane flight.