"💬 ”Roughly speaking, the world is divided into two classes: those who use the Card Index System and those who do not.”
Byles, R. B, 1911. The card index system; its principles, uses, operation, and component parts (London: Sir Isaac Pitman & Sons), page v. "

Still true after more than a century!

#Zettelkasten
#NoteTaking
#PKM https://archive.org/search.php?query=creator%3A%22Byles%2C+R.+B%22