Counterfactual
The Parallel Lives of Calder and Harlan
In 94 boys, Calder found its level. 50 years earlier, Harlan occupied that same statistical address.
1980–2025
Calder
Peak year
2016
Peak births
120
Latest count
94
Status
Stable
Peak generation
Gen Alpha
1880–2025
Harlan
Peak year
1924
Peak births
519
Latest count
454
Status
Rising
Peak generation
Greatest Generation
In 94 boys, Calder found its level. 50 years earlier, Harlan occupied that same address. One peaked in the Greatest Generation era; the other in the Gen Alpha world. They never met. But the data remembers them both.