When two events (call them A and B) are Mutually Exclusive it is impossible for them to happen together: P(A and B) = 0. The probability of A and B together equals 0 (impossible).
Answer Wiki. Strauss & Howe, the social historians known for pioneering generational theory[1], would say that Gen X (the 13th generation) and Gen Y (the millennial generation) each have the traits of their corresponding generational archetypes. Generation X is generally used to refer to people born in the 60s and 70s. According to Strauss & Howe, it is a Nomad generation, an archetype they share with the Lost Generation of the 1890s and 1900s. Both generations are characterized by a disaffected attitude and general disdain for everything that came before.
1 American Associations of Law Libraries â I am Gen Y. âGeneration Y are variable â dates ranging as widely as 1979 through 1994 and 1982 though 2000 have been used.â.  USA Today â I am Gen Y. âThere is no consensus over the exact birth dates that define Gen Y, also known by some as echo boomers and millennials. But the broadest definition generally includes the more than 70 million Americans born 1977 to 2002. Generation X was born roughly 1965 to 1976.