Counterfactual

The Parallel Lives of Sean and Brock

In 616 boys, Sean found its level. 50 years earlier, Brock occupied that same statistical address.

1925–2025

Sean

peak 1990 2025 192019401960198020002020
Peak year 1990
Peak births 12,018
Latest count 616
Status Endangered
Peak generation Millennial
1914–2025

Brock

peak 2003 2025 192019401960198020002020
Peak year 2003
Peak births 1,378
Latest count 306
Status Declining
Peak generation Gen Z
Sean and Brock peaked in the same cultural weather — the Millennial naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.