Counterfactual
The Parallel Lives of Leeroy and Jakob
In 32 boys, Leeroy found its level. 50 years earlier, Jakob occupied that same statistical address.
1887–2025
Leeroy
Peak year
1927
Peak births
95
Latest count
32
Status
Stable
Peak generation
Greatest Generation
1957–2025
Jakob
Peak year
2001
Peak births
2,192
Latest count
135
Status
Endangered
Peak generation
Gen Z
In 32 boys, Leeroy found its level. 50 years earlier, Jakob 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.