I think about this a lot, and how it happens in the Foundation novels. A whole galaxy-wide civilization with FTL spaceships and everything - but where nobody k

I think about this a lot, and how it happens in the Foundation novels. A whole galaxy-wide civilization with FTL spaceships and everything - but where nobody knows how anything works. The story vaguely resembles The Decline and Fall of the Roman Empire, which is also frequently discussed as an analogue for current times.