Zettelkasten A Tool by Niklas Luhmann en.wikipedia.org A zettelkasten consists of many individual notes with ideas and other short pieces of information that are taken down as they occur or are acquired. The notes are numbered hierarchically, so that new notes may be inserted at the appropriate place, and contain metadata to allow the note-taker to associate notes with each other. For example, notes may contain tags that describe key aspects of the note, and they may reference other notes. The numbering, metadata, format and structure of the notes is subject to variation depending on the specific method employed. zettelkasten.deHow to Make a Complete Map of Every Thought You ThinkThe Zettelkasten MethodWhat this site is notetakingthinkingwriting
If a book can be summarized, is it worth reading? An Article by Austin Kleon austinkleon.com It is my opinion that if a book’s contents can be adequately “summed up,” so that you really don’t miss anything by reading the summary, it is not actually a book worth reading. (Of course, there’s no way to tell whether a summary is adequate or not unless you have also read the book.) Also, I suspect that the harder you find it to summarize a book you have read, the more valuable it might be. On 'The Master and His Emissary' reading