That's a good point. Print encyclopedias might
not contain spoiler
warnings, but how many of them contain plot details or even plot summaries?
Would it even be legal for Brittanica to include as many details as
Wikipedia when it comes to plots of copyrighted works? I doubt it.
That's an interesting pint, has anyone ever tried to bring a legal
challenge over that? How detailed a summary can still be considered
fair use?