From the article: "Programmers wanting to avoid the Y2K bug had two broad options: entirely rewrite their code, or adopt a quick fix called “windowing”, which

From the article: "Programmers wanting to avoid the Y2K bug had two broad options: entirely rewrite their code, or adopt a quick fix called “windowing”, which would treat all dates from 00 to 20, as from the 2000s, rather than the 1900s. An estimated 80 per cent of computers fixed in 1999 used the quicker, cheaper option." So basically if (date = 00-20) then year = 20XX This is the most classic, lazy, contractor fix I have ever heard of- would love to hear some people who actually did support work for Y2k weigh in on this article.