I had a conversation with a friend because we had two different conceptions of history (btw, none of us are historians). My conception is that every event belongs to history, so what is happening right now is part of the history. His view is that many years must pass, so we can say something belongs to history.
I saw that one of the rules of this subreddit is that events of discussion must be at least 20 years old, so no modern event is discussed. Is this because history is not such if it's not at least 20 years old (therefore not studied by historians), or just a rule to maintain this sub civil and avoid modern controversies?
Response from Discord:
the 20 year rule is an arbitrary rule for the purposes of simple topic enforcement
things that happened yesterday could be considered historic, things that happened 20 years ago could be considered recent
there's no such thing as a universal definition
however, for our internet community moderation purposes, 20 years seems to be helpful as a simple line for our enforcement
because at the end of the day, we do need some enforcement
So, I guess both definitions are right.