3 ms·
On Wayback machine references to this post (a much shorter version though) go back to 1998, this is the oldest reference: https://web.archive.org/web/199802062
by flohofwoe 3mo ago
On Wayback machine references to this post (a much shorter version though) go back to 1998, this is the oldest reference:
https://web.archive.org/web/19980206223800/https://www.norvig.com/21-days.html https://web.archive.org/web/19980206223800/https://www.norvi...
- cubefox 3mo agoSo he changed the text as time went on, since the 1998 version doesn't reference Khan Academy. Though the "(1998)" might still be justified if the changes are minor.