Counterfactual

The Parallel Lives of Mark and Leonard

In 1,416 boys, Mark found its level. 50 years earlier, Leonard occupied that same statistical address.

1880–2025

Mark

peak 1960 2025 18801900192019401960198020002020
Peak year 1960
Peak births 58,727
Latest count 1,416
Status Endangered
Peak generation Boomer
1880–2025

Leonard

peak 1921 2025 18801900192019401960198020002020
Peak year 1921
Peak births 5,650
Latest count 438
Status Endangered
Peak generation Greatest Generation
In 1,416 boys, Mark found its level. 50 years earlier, Leonard occupied that same address. One peaked in the Greatest Generation era; the other in the Boomer world. They never met. But the data remembers them both.