linguica's comments

Doom has been played for probably thousands of man-centuries at this point so all of them had been found through normal play. However, a lot of them had no real documentation explaining why they happened, since speedrunners tend to view bugs from a "how can this help me?" mindset rather than "why does this occur?" The elastic collisions bug in particular was considered a mystery before I researched it, but the rest were more or less understood.

So this is sort of like the late Google Desktop? For a long time I have been annoyed that with the oodles of space and bandwidth we have nowadays, something as conceptually simple as "a searchable history of everything you look at online" doesn't really exist anymore.