Comment by BlueTemplar

My point is that you don't know at the moment everything that is going to be subjectively critical for the specific issue at hand years later.

But thankfully it's not so much of an issue, storage is cheap enough these days that ALL (human generated) text can be stored. Just don't use closed platforms like Discord, and 3rd party crawlers will do it for you.

(It's a bit more complicated for multimedia : we're probably at the point that ALL pictures, except the most high-resolution ones can be stored for cheap too, not sure for audio, probably animations too (just not as gifs, for the love of God!)... it's more complicated for video, especially HD and higher, since that is very storage-intensive...)