According to the archived response headers, it was modified in April 2002: $ curl -s -I 'https://web.archive.org/web/20020603071812/https://norvig.com/norvig

According to the archived response headers, it was modified in April 2002: $ curl -s -I 'https://web.archive.org/web/20020603071812/https://norvig.com/norvigs-law.html' | grep -E '^x-archive-orig-.* [0-9]{4} ' x-archive-orig-date: Mon, 03 Jun 2002 07:18:15 GMT x-archive-orig-last-modified: Thu, 18 Apr 2002 07:27:36 GMT