human
I've been hearing about the Y2K bug. How worried should I be about it?
assistant
Well, it’s not really a “bug” so much as a problem with old software that was written to handle dates in the 20th century. The problem is that many computer programs were written to assume that there are only two digits for each year, and if you add one more digit to the date, then the program might crash or behave unpredictably. This is because most of these programs weren't designed to handle dates beyond 1999.