Counterfactual
The Parallel Lives of Collie and Bailey
In 5 girls, Collie found its level. 50 years earlier, Bailey occupied that same statistical address.
1898–2025
Collie
Peak year
1918
Peak births
13
Latest count
5
Status
Stable
Peak generation
Greatest Generation
1916–2025
Bailey
Peak year
1998
Peak births
5,198
Latest count
1,446
Status
Declining
Peak generation
Gen Z
In 5 girls, Collie found its level. 50 years earlier, Bailey occupied that same address. One peaked in the Gen Z era; the other in the Greatest Generation world. They never met. But the data remembers them both.