<human>:  Who was the first person to propose the idea of a Y2K problem?
<bot>: That would be a guy named Grace Hopper, who was a programmer in the 1940s. She noticed that the number of binary digits in the year 2000 was equal to the number of binary digits in the year 1900, which made her wonder if the computers of the future would be able to handle the transition from the 1900s to the 2000s. In fact, she realized that the year 2000 could be a problem for the computer systems of the future, because computers are not good at handling numbers that are not evenly divisible by two.