All the shrieking over the recent events on the New York Stock Exchange over the trading in GameStop Corp. may be the best indication of the 21st century. By that, I mean the generations that have come of age in the past 20 years or so. I am an expert. I have four sons, all Millennials or younger.

“Official” age designations are as follows: Baby boomers were born between 1946 and 1964, currently 57 to 75 years old. Gen X were born between 1965 and 1980 and currently from 41-56 years old. Gen Y/Millennials were born between 1981 and 1997. Gen Z were born between 1998 and 2015.