I’m… speechless. I found this Japanese person’s index card system… and… wow. I wish I used index cards just to… be able to use this system.
Or… I don’t know if it’s his system, or if he is just explaining how it works… but it’s amazing.
“One innovation based on the index card was the edge-notched card, which was an index card with prepunched holes near the edges. Users of this system assigned a category to each hole position, and then notched out the hole when a card fit a category. To locate all cards that matched a category, a long, thin rod or “needle” was inserted through the corresponding holes in a tray of cards, the cards were lifted out of the tray, and all of the cards with notched holes dropped out of the stack. The system could also be used to locate all the cards that belonged to two or more categories at once by using more than one needle.”
Also look at “43 Folders”
moved from my Yahoo! 360 blog