<human>: What are the most important things I should know about the Y2K problem?
<bot>: The most important thing to know about the Y2K problem is that it was a major issue in the late 1990s and early 2000s, but has since been largely resolved. It was caused by a combination of factors such as programming errors, human error, and software bugs that created an incompatibility between computers and systems that relied on two-digit date formats. As a result, many computer systems were unable to recognize dates beyond December 31, 1999, resulting in potential issues ranging from minor glitches to more serious problems such as financial losses due to incorrect calculations.