He needed a way to remember what each medicine was for, how much to take, and when. Medicines help us live longer and healthier. But, taking them the wrong way or mixing certain drugs can be dangerous. You need to be careful to keep track of your medicines and use them safely.
This is a listing of recent generations for individuals born in the United States. Dates are approximate, as recognized by demographers. 2000/2001-Present-New Silent Generation or Generation Z. 1980-2000 - Millennials or Generation Y. 1965-1979 - Generation X.
That is likely the most logical date range as people born on 1980 was at the start of a new generation, the birth of video games, the internet, computers, etc. 1980 on onward is generally the start of a new technological era that built up to the year 2000, the Millennium.