What is the point of this curious device? (Conrad is not the only author to have adopted it.) Is there always a (perhaps suppressed) story about the telling of the story waiting to be told?

• 这种奇怪的设置用意是什麽？（康德不是唯一一个采用这种形式的作者。）是否总是有一个等待被告知的（可能被禁的）故事？